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Tandem roller
US 3,416,419 A
Filed
: 08/07/1967
Issued
: 12/17/1968
Est. Priority Date
: 08/07/1967
Status: Expired due to Term
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13 Citations
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Current Assignee
Donald D. Kronholm
Original Assignee
Donald D. Kronholm
Inventors
Kronholm, Donald D.
Application Number
US04/658,672
Time in Patent Office
498 Days
Field of Search
US Class Current
404/122
CPC Class Codes
E01C 19/238
Wetting, cleaning or heatin...
E01C 19/26
self-propelled or fitted to...
E01C 2301/30
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