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3665801
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Information
Patent Grant
3665801
References
Source
Patent Number
3,665,801
Date Filed
Not available
Date Issued
Tuesday, May 30, 1972
52 years ago
CPC
F16B25/103 - by means of a drilling screw-point
F16B25/0031 - the screw being designed to be screwed into different materials
F16B25/0057 - the screw having distinct axial zones
F16B25/0084 - characterised by geometric details of the tip
F16B25/0089 - the screw having wings
Y10T408/9097 - Spiral channel
US Classifications
411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
408 - Cutting by use of rotating axially moving tool
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