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ALLAN CUMMINGS
ALLAN CUMMINGS et al
› Overview
Abstract
Drawing
Description
Claims
Patent number
: 161390
Filing date
: Feb 15, 1875
Issue date
: Mar 30, 1875
Inventors
: ALLAN CUMMINGS, ALLAN CUMMINGS
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View patent at USPTO
Referenced by
Patent Number
Title
Issue date
D343571
Screw
Jan 25, 1994
6186718
Threaded fastener having a head with a triangle centerpost within a triangle recess
Feb 13, 2001
6423067
Nonlinear lag screw with captive driving device
Jul 23, 2002
6430756
Closet bolt
Aug 13, 2002
Drawings
Drawing