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	1.	No cover image available Catchword indexing to the second edition of the International patent classification by United States. Department of Commerce United States. Department of Commerce. Patent Office Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington : United States Department of Commerce, 1974 Availability: Items available for loan: National Library of India (1)Call number: U.S 025.4860253 Un 3. Place hold Request article Save to lists
	2.	No cover image available Index to classification / United States Department of Commerce by United States. Department of Commerce. Patent Office Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington, D. C. : U.S Govt. Printing office, 1966 Availability: Items available for loan: National Library of India (1)Call number: US 608.02547. Place hold Request article Save to lists

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