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US 2,415,372 A
Filed
: 06/16/1945
Issued
: 02/04/1947
Est. Priority Date
: 06/16/1945
Status: Expired due to Term
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21
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Current Assignee
Corradino R. Zaino
,
Lloyd B. Salt
Original Assignee
Corradino R. Zaino
,
Lloyd B. Salt
Inventors
Salt, Lloyd B.
,
Zaino, Corradino R.
Application Number
US02/599,852
Time in Patent Office
598 Days
Field of Search
US Class Current
15/43
CPC Class Codes
A47L 11/162
having only a single disc b...
A47L 11/4013
Contaminants collecting dev...
A47L 11/4025
Means for emptying
A47L 11/4038
Disk shaped surface treatin...
A47L 5/26
with driven dust-loosening ...
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