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Printing from Screen Plates 563
17. Amer. Annual Phot. 1911 ; Brit. J. Phot. 1911, 58, Col. Phot. Supp. 5, 7.
18. Photo-Gaz. 1911 ; Brit. J. Phot. 1911, 58, Col. Phot. Supp. 5, 7.
19. Photography, 1908, 223.
20. Bull. Soc. frang. Phot. 1911; Phot. Mitt. 1911, 48, 156; Photo-Rev. 1911; Brit. J. Phot. 1911, 58, Col. Phot. Supp. 5, 53; 1917, 64, ibid. 11, 48. Cf. A. Weimann, Phot. Mitt. 1911, 48, 215. C. Fingerhuth, Phot. Rund. 1915, 52, 81. As to using two plates in superposition see L. Gimpel, Bull. Soc. frang. Phot. 1923, 65, 23.
21. Brit. J. Phot. 1913, 60, Col. Phot. Supp. 7, 45. Cf. A. Weimann, Phot. Mitt. 1911, 48, 215.
Cf. Brit. J. Phot. 1914, 61, Col. Phot. Supp. 8, 29 as to reproducing by photo-engraving.
22. Brit. J. Phot. 1923, 70, Col. Phot. Supp. 17, 19; Amer. Phot. 1923, 17, 48.
23. E.P. 8,390, 1896; abst. Brit. J. Phot. 1907, 54, Col. Phot. Supp. 1, 24; D.R.P. 96,773; Silbermann, 2, 382; Bull. Soc. frang. Phot. 1898, 45, 72; Mon. Sci. 1898; Phot. Chron. 1898, 5, 181; Jahrbuch, 1899, 13, 543; 1907, 21, 129; U.S.P. 571.314; Phot. J. 1901, 41, 266; Process Photogram, 1897, 4, 192; Can.P. 50,898.
24. E.P. 20,417, 1898; Brit. J. Phot. 1899, 46, 118; Brit. J. Almanac, 1900, 853 ; Jahrbuch, 1900, 14, 564.
25. E.P. 15,185, 1905; Brit. J. Phot. 1906, 53, 674; D.R.P. 174,964; Jahrbuch, 1907, 21, 129, 585; Belg.P. 192,563; U.S.P. 897,815; Chem. Ztg. 1906, 348; Phot. Chron. 1907, 14, 147; Phot. Coul. 1907, 2, 73.
26. E.P. 716, 1907; Brit. J. Phot. 1907, 54, 678; F.P. 373,376; D.R.P. 177,343, 1906; Phot. Chron. 1907, 14, 238; Jahrbuch, 1907, 22, 585; Austr.P. 31,034.
27. E.P. 4,932, 1907; 4,745, 1908; Brit. J. Phot. 1908, 55, 243, 515; F.P. 367,834; D.R.P. 214,323; 219,821; U.S.P. 1,163,207; Belg.P. 198,227; 205,697; Jahrbuch, 1911, 25, 373.
28. D.R.P. 221,916, 1908; U.S.P. 1,113,359, granted to A. Lehner.
29. D.R.P. 193,062, 1905; addit. 167,232; previous addit. 167,613; 188,431; 190,560.
30. D.R.P. 254,181, 1908; Austr.P. 8,344, 1909; U.S.P. 1,093,948; Jahrbuch, 1913, 27, 302; Phot. Ind. 1912, 1810; F.P. 417,382; abst. C. A. 1914, 8, 1924; E.P. 25,998, 1909; Brit. J. Phot. 1910, 57, 899.
31. E.P. 22,451, 1912; Brit. J. Phot. 1913, 60, 823; D.R.P. 228,597; 288,598, 1910; U.S.P. 1,091,443; 1,093,948; Zeits. ang. Chem. 1916, II, 41; F.P. 449,080; abst. C. A. 1914, 8, 1711; Phot. J. Amer. 1913, 50, 576; 1916, 53, 79; Jahrbuch, 1915, 29, 147; Belg.P. 249,309.
32. D.R.P. 190,349, 1906; Brit. J. Phot. 1907, 54, Col. Phot. Supp. 1, 4; abst. Brit. J. Almanac, 1909, 645; Phot. Chron. 1908, 15, 147; Jahrbuch, 1908, 22, 618.
33. D.R.P. 251,653, 1908; addit. 224,701; F.P. 410,602; 445,787; E.P. 1,234, 1910; Austr.P. Anm. 4,633; abst. J. S. C. I. 1909, 28, 1064; 1910, 29, 1410; Jahrbuch, 1910, 24, 387; 1911, 29, 375.
34. E.P. 15,050, 1908; Brit. J. Phot. 1909, 56, 634; Brit. J. Almanac, 1910, 616; Belg.P. 228,228; F.P. 389,977; 445,787; abst. J. S. C. I. 1913, 32, 1033; Wag. Jahr. 1912, II, 567; Jahrbuch, 1913, 27, 300.
35. E.P. 19,601, 1910; Brit. J. Phot. 1911, 58, 747; abst. C. A. 1912, 6, 1408; Phot. J. Amer. 1913, 50, 576; F.P. 463,062; abst. J. S. C. I. 1914, 36, 440; 1915, 37, 1118.
36. E.P. 15,935, 1912; Brit. J. Phot. 1913, 60, 634; F.P. 445,787; Austr.P. 64,542.
37. E.P. 18,553, 1909; Belg.P. 218,393. Cf. E.P. 12,891, 1911.
38. D.R.P. 250,647, 1909; Jahrbuch, 1913, 27, 548. Cf. C. Kriss, Austr.P. 42,687, 1909.
39. F.P. 409,323, 1909; abst. J. S. C. I. 1910, 29, 720; Belg.P. 220,624.
40. E.P. 1,549, 1912; Brit. J. Phot. 1913, 60, 145; F.P. 438,746; 533,157; Austr.P. 10,636, 1911; 60,094. Cf. E.P. 182,167, 1921; abst. J. S. C. I. 1922, 41, 648A; D.R.P. 308,405; Phot. Ind. 1922, 676; Brit. J. Phot. 1922, 69, 464; Col. Phot. Supp. 16, 29; C. A. 1922, 16, 4152; Belg.P. 242,038; Swiss P. 59,910; Dan.P. 34,380.
41. D.R.P. 362,106, 1918; addit. to 308,405; Phot. Ind. 1923, 277. In D.R.P. 354,389 Obergassner patented a method of granulating colloids, except soap, so that they will be free from bubbles, especially for color screens, by spraying the solutions by means of gases that are soluble in the colloid or its solvents.