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Power actuator for doors
US 2,757,554 A
Filed
: 08/01/1952
Issued
: 08/07/1956
Est. Priority Date
: 08/01/1952
Status: Expired due to Term
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6
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Current Assignee
Niedhammer Jr Edwin John
,
William C. Smith Jr
Original Assignee
Niedhammer Jr Edwin John
,
William C. Smith Jr
Inventors
NIEDHAMMER JR EDWIN JOHN
,
Smith, William C. Jr.
Application Number
US03/302,266
Time in Patent Office
1,467 Days
Field of Search
US Class Current
74/520
CPC Class Codes
E05F 15/616
operated by push-pull mecha...
E05Y 2201/22
Locks
E05Y 2900/132
Doors
Y10T 74/20588
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