William M. Curtis

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Richardson, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Spring balance assembly
- Patent number 4,537,233
- Issue date Aug 27, 1985
- Continental Emsco Company
- Evart. J. Vroonland
- B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...