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Self propelled suction cleaner
US 2,814,063 A
Filed
: 08/31/1954
Issued
: 11/26/1957
Est. Priority Date
: 08/31/1954
Status: Expired due to Term
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Current Assignee
Melvin H. Ripple
Original Assignee
Melvin H. Ripple
Inventors
Ripple, Melvin H.
Application Number
US03/453,326
Time in Patent Office
1,183 Days
Field of Search
US Class Current
15/319
CPC Class Codes
A47L 5/30
with driven dust-loosening ...
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