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Automatic vacuum cleaner
US 2,634,819 A
Filed
: 09/21/1949
Issued
: 04/14/1953
Est. Priority Date
: 09/21/1949
Status: Expired due to Term
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Current Assignee
George H. Cranmer
Original Assignee
George H. Cranmer
Inventors
Cranmer, George H.
Application Number
US03/117,040
Time in Patent Office
1,301 Days
Field of Search
US Class Current
96/398
CPC Class Codes
A47L 9/1481
Means for removing bags in ...
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