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Wide angle lenses
US 2,908,197 A
Filed
: 01/29/1954
Issued
: 10/13/1959
Est. Priority Date
: 01/29/1954
Status: Expired due to Term
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Current Assignee
Wesley B. Wells
,
William K. Lockhart
Original Assignee
Wesley B. Wells
,
William K. Lockhart
Inventors
Wells, Wesley B.
,
Lockhart, William K.
Application Number
US03/406,973
Time in Patent Office
2,083 Days
Field of Search
US Class Current
340/815.76
CPC Class Codes
F21V 5/04
of lens shape
F21V 7/0091
using total internal reflec...
G02B 13/04
Reversed telephoto objectives
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