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Automatic baseball umpire or the like
US 2,943,141 A
Filed
: 01/07/1955
Issued
: 06/28/1960
Est. Priority Date
: 01/07/1955
Status: Expired due to Term
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Current Assignee
Lloyd F. Knight
Original Assignee
Lloyd F. Knight
Inventors
Knight, Lloyd F.
Application Number
US03/480,435
Time in Patent Office
1,999 Days
Field of Search
US Class Current
348/157
CPC Class Codes
A63B 2220/806
Video cameras
A63B 2220/807
Photo cameras
A63B 24/0003
Analysing the course of a m...
A63B 71/0605
Decision makers and devices...
H04N 7/181
for receiving images from a...
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