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Abe W. Mathews Engineering Co.
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Hibbing, MN, US
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Patents Grants
last 30 patents
Information
Patent Grant
Door operator apparatus
Patent number
4,429,491
Issue date
Feb 7, 1984
Abe W. Mathews Engineering Co.
James A. Bruns
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
73326498 - EPD
Serial number
73326498
Registration number
1263375
Filing date
Sep 3, 1981
Abe W. Mathews Engineering Co.
6 - Common metals and their alloys