Joint and arm portions of spring biased hinge

Tools and hardware – Hinge – Leaf type

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0806

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D04194225

REFERENCES:
patent: 134617 (1873-01-01), Thompson
patent: 803509 (1905-10-01), Ryan
patent: 1627584 (1927-05-01), Tishken
patent: 1785362 (1930-12-01), Regan
patent: 3102583 (1963-09-01), Rowe et al.
patent: 3469277 (1969-09-01), Henrichs et al.
patent: 4485522 (1984-12-01), Chen
patent: 4495672 (1985-01-01), Adams
patent: 4629243 (1986-12-01), Jensen
patent: 4788837 (1988-12-01), MacFarlane
patent: 5131246 (1992-07-01), Bonzer
patent: 5884363 (1999-03-01), Tofts
Hong Kong Enterprise; p. 771; 2 hinges with staggered leaves (center top), Jun. 1994.
Bronson Co., Homer D., "Hinges by the Homer D. Bronson Company," 1971, p. 25, right column Entitled "Spring Hinges".
Guden Co., H.A., "Hardware for Industry," 1979, p. 9, bottom third of page entitled "Spring Hinges".

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