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3900 CORP.
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BALTIMORE, MD, US
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Patents Grants
last 30 patents
Information
Patent Grant
Dual loop hose clamp
Patent number
4,958,419
Issue date
Sep 25, 1990
3900 Corp.
John E. Heckethorn
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Segmented Vee clamp
Patent number
4,722,561
Issue date
Feb 2, 1988
3900 Corp.
John E. Heckethorn
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Motor vehicle garaging safety methods, and apparatus and systems
Patent number
4,665,378
Issue date
May 12, 1987
3900 Corp.
John E. Heckethorn
G08 - SIGNALLING
Patents Applications
last 30 patents
Trademark
last 30 trademarks
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Trademark
73628136 - BIG YELLOW
Serial number
73628136
Filing date
Nov 3, 1986
3900 CORP.
6 - Common metals and their alloys