This is an index of the archive of ICL material held in the Science Museum Library. For details of access click here. The whole archive is covered in the master index.
This index is maintained by the Computer Conservation Society.

19. American Patents [boxed]

for index see ICL 18/1

Item no	Date	Content
19/1		Nos 395,781 - 1,309,999
19/2		Nos 1,310,000 - 1,678,999
19/3		Nos 1,680,000 - 1,811,999
19/4		Nos 1,812,000 - 1,880,999
19/5		Nos 1,881,000 - 1,945,999
19/6		Nos 1,946,000 - 1,999,999
19/7		Nos 2,000,000 - 2,056,999
19/8		Nos 2,057,000 - 2,098,999
19/9		Nos 2,099,000 - 2,150,999
19/10		Nos 2,151,000 - 2,198,999
19/11		Nos 2,199,000 - 2,266,999
19/12		Nos 2,267,000 - 2,370,999
19/13		Nos 2,371,000 - 2,450,999
19/14		Nos 2,451,000 - 2,552,999
19/15		Nos 2,553,000 - 2,612,999
19/16		Nos 2,613,000 - 2,645,999
19/17		Nos 2,646,000 - 2,685,999
19/18		Nos 2,686,000 - 2,702,999
19/19		Nos 2,703,000 - 2,739,999
19/20		Nos 2,740,000 - 2,765,999
19/21		Nos 2,766,000 - 2,792,999
19/22		Nos 2,793,000 - 2,819,999
19/23		Nos 2,820,000 - 2,850,999
19/24		Nos 2,851,000 - 2,888,999
19/25		Nos 2,889,000 - 2,910,999
19/26		Nos 2,911,000 - 2,925,999
19/27		Nos 2,926,000 - 2,946,999
19/28		Nos 2,947,000 - 2,964,999
19/29		Nos 2,965,000 - 2,972,999
19/30		Nos 2,973,000 - 2 974,500
19/31		Nos 2,974,501 - 2,990,000
19/32		Nos 2,990,001 - 2,999,999