Willis; Wilfred Ernest
Patent Applications and Registrations
Patent applications and USPTO patent grants for Willis; Wilfred Ernest.The latest application filed is for "altering the properties of concrete by altering the quality or geometry of the intergranular contact of filler materials".
- Willis; Wilfred Ernest - San Francisco CA
| Patent | Date |
|---|---|
| Altering the properties of concrete by altering the quality or geometry of the intergranular contact of filler materials Grant 3,927,163 - Gabriel , et al. December 16, 1 | 1975-12-16 |
| Altering the properties of concrete by altering the quality or geometry of the intergranular contact of filler materials Grant 3,917,781 - Gabriel , et al. November 4, 1 | 1975-11-04 |
| Side-loading Attachment For Forklift Trucks Grant 3,854,616 - Willis , et al. December 17, 1 | 1974-12-17 |
| Side-loading Attachment For Fork-lift Trucks Grant 3,561,620 - Willis February 9, 1 | 1971-02-09 |
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