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	1.		History of classification of patents by Bailey, M F Material type: Text; Format: print ; Literary form: Not fiction Publication details: U.S.A.: The Journal of the patent office society, 1946 Availability: Items available for loan: National Science Library (1)Call number: D 025.4:608.3(091) H6. Place hold Add to cart (remove)
	2.		Development and use of patent classification systems by Connor, John T Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington, D. C.: Patent Office United States of America, 1966 Availability: Items available for loan: National Science Library (1)Call number: D 025.4:608.3 K6 . Place hold Add to cart (remove)
	3.		Indian patents centenary: (1856-1956) Souvenir Material type: Text; Format: print ; Literary form: Not fiction Publication details: Calcutta: Patent office, 1956 Availability: Items available for reference: National Science Library: Not for loan (1)Call number: 608(088.8) J6. Add to cart (remove)

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