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Door closing device
US 2,953,810 A
Filed
: 11/30/1956
Issued
: 09/27/1960
Est. Priority Date
: 11/30/1956
Status: Expired due to Term
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Current Assignee
Joseph Hall
Original Assignee
Joseph Hall
Inventors
Hall, Joseph
Application Number
US03/625,314
Time in Patent Office
1,397 Days
Field of Search
US Class Current
16/52
CPC Class Codes
E05F 3/108
with piston rod protruding ...
E05Y 2900/132
Doors
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