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Electrically propelled household vacuum cleaner
US 2,950,772 A
Filed
: 07/22/1955
Issued
: 08/30/1960
Est. Priority Date
: 07/22/1955
Status: Expired due to Term
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Current Assignee
Clara A. Dostal
,
Frank Dostal
Original Assignee
Clara A. Dostal
,
Frank Dostal
Inventors
Dostal, Clara A.
,
Dostal, Frank
Application Number
US03/523,677
Time in Patent Office
1,866 Days
Field of Search
US Class Current
180/6.66
CPC Class Codes
A47L 5/30
with driven dust-loosening ...
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