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Mechanism in the cover of a vacuum cleaner for rendering the cleaner inoperative if no bag is in place
US 2,860,725 A
Filed
: 11/29/1956
Issued
: 11/18/1958
Est. Priority Date
: 11/29/1956
Status: Expired due to Term
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Current Assignee
Allen P. Cawl
,
John J. Kowalewski
Original Assignee
Allen P. Cawl
,
John J. Kowalewski
Inventors
Cawl, Allen P.
,
Kowalewski, John J.
Application Number
US03/625,087
Time in Patent Office
719 Days
Field of Search
US Class Current
96/404
CPC Class Codes
A47L 9/00
Details or accessories of s...
A47L 9/1472
combined with security mean...
A47L 9/19
Means for monitoring filter...
A47L 9/2842
Suction motors or blowers
A47L 9/2889
Safety or protection device...
Y10S 292/65
Emergency or safety
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