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US 2,936,607 A
Filed
: 06/19/1957
Issued
: 05/17/1960
Est. Priority Date
: 06/19/1957
Status: Expired due to Term
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Current Assignee
Watrous A. Nielsen
Original Assignee
Watrous A. Nielsen
Inventors
Nielsen, Watrous A.
Application Number
US03/666,534
Time in Patent Office
1,063 Days
Field of Search
US Class Current
70/277
CPC Class Codes
G07C 9/00563
using personal physical dat...
G07C 9/37
using biometric data, e.g. ...
Y10S 70/51
Light sensitive control means
Y10T 70/7062
Electrical type [e.g., sole...
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