Cardinal Tank Corp.

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Brooklyn, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of molding a manhole frame for spherical tanks
- Patent number 4,883,626
- Issue date Nov 28, 1989
- Cardinal Tank Corp.
- William J. Weidman
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Die system for making manhole frame for spherical tanks
- Patent number 4,818,211
- Issue date Apr 4, 1989
- Cardinal Tank Co.
- William J. Weidman
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

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