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Ring Screw Works, Inc.
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Madison Heights, MI, US
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Patents Grants
last 30 patents
Information
Patent Grant
Bolt including a cleaning thread point tip
Patent number
5,667,443
Issue date
Sep 16, 1997
Ring Screw Works
John Allen
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Anti-cross thread fastener with cleaning tip
Patent number
5,618,236
Issue date
Apr 8, 1997
Ring Screw Works
Gus G. Avgoustis
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Bolt including a cleaning thread point tip
Patent number
5,499,895
Issue date
Mar 19, 1996
Ring Screw Works
John Allen
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Anti-cross thread fastener with cleaning tip
Patent number
5,419,667
Issue date
May 30, 1995
Ring Screw Works
Gus G. Avgoustis
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Bolt including a cleaning thread point tip
Patent number
5,374,146
Issue date
Dec 20, 1994
Ring Screw Works
John Allen
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Anti-cross thread screw
Patent number
4,952,110
Issue date
Aug 28, 1990
Ring Screw Works, Inc.
Gus G. Avgoustis
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
74630937 - T
Serial number
74630937
Registration number
1988116
Filing date
Feb 7, 1995
RING SCREW WORKS
6 - Common metals and their alloys
Information
Trademark
74590941
Serial number
74590941
Filing date
Oct 26, 1994
RING SCREW WORKS
6 - Common metals and their alloys
Information
Trademark
74429337 - T
Serial number
74429337
Registration number
1952178
Filing date
Aug 26, 1993
RING SCREW WORKS
6 - Common metals and their alloys
Information
Trademark
74115071
Serial number
74115071
Registration number
1713007
Filing date
Nov 13, 1990
RING SCREW WORKS
6 - Common metals and their alloys
Information
Trademark
74114938 - F
Serial number
74114938
Registration number
1682630
Filing date
Nov 13, 1990
RING SCREW WORKS
6 - Common metals and their alloys
Information
Trademark
74115073
Serial number
74115073
Registration number
1917592
Filing date
Nov 13, 1990
RING SCREW WORKS
6 - Common metals and their alloys
Information
Trademark
74115070 - S
Serial number
74115070
Registration number
1736035
Filing date
Nov 13, 1990
RING SCREW WORKS
6 - Common metals and their alloys
Information
Trademark
74115069 - T
Serial number
74115069
Filing date
Nov 13, 1990
RING SCREW WORKS
6 - Common metals and their alloys
Information
Trademark
74115072
Serial number
74115072
Registration number
1728871
Filing date
Nov 13, 1990
RING SCREW WORKS
6 - Common metals and their alloys
Information
Trademark
74114937 - F
Serial number
74114937
Registration number
1687549
Filing date
Nov 13, 1990
RING SCREW WORKS
6 - Common metals and their alloys
Information
Trademark
74115074 - S
Serial number
74115074
Registration number
1739417
Filing date
Nov 13, 1990
RING SCREW WORKS
6 - Common metals and their alloys