Handy; Richard L.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Handy; Richard L..The latest application filed is for "back pressured pneumatic pressure cell".
- Handy; Richard L. - Ames IA
- Handy; Richard L. - Des Moines IA
| Patent | Date |
|---|---|
| Back pressured pneumatic pressure cell Grant 4,662,213 - Handy , et al. May 5, 1 | 1987-05-05 |
| Tapered blade in situ soil testing device Grant 4,543,820 - Handy , et al. October 1, 1 | 1985-10-01 |
| Soil effective stress sensor and method of using same Grant 4,524,626 - Pabst , et al. June 25, 1 | 1985-06-25 |
| Support system for a railroad track Grant 4,494,694 - Pitt , et al. January 22, 1 | 1985-01-22 |
| Borehole plate test Grant 4,458,525 - Lutenegger , et al. July 10, 1 | 1984-07-10 |
| Basement waterproofing system Grant 4,290,252 - Demirel , et al. September 22, 1 | 1981-09-22 |
| Portable variable expansion testing device for measuring lateral pressure induced on a material by a vertical applied pressure Grant 4,122,704 - Lutenegger , et al. October 31, 1 | 1978-10-31 |
| Rock borehole shear tester Grant 4,075,885 - Handy , et al. February 28, 1 | 1978-02-28 |
| Method And Apparatus For In Situ Measurement Of Soil Creep Strength Grant 3,673,861 - Handy July 4, 1 | 1972-07-04 |
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