Luckenbill; Lawrence F.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Luckenbill; Lawrence F..The latest application filed is for "self draining hose connection dual check valve back flow preventer".
- Luckenbill; Lawrence F. - Decatur IL
| Patent | Date |
|---|---|
| Self draining hose connection dual check valve back flow preventer Grant 5,228,470 - Lair , et al. July 20, 1 | 1993-07-20 |
| Self-draining hose connection vacuum breaker and backflow preventer Grant 4,712,575 - Lair , et al. December 15, 1 | 1987-12-15 |
| Thermal element Grant 4,253,304 - Lamb , et al. March 3, 1 | 1981-03-03 |
| Fire hydrant with improved weather cap and bonnet arrangement Grant 4,083,377 - Luckenbill April 11, 1 | 1978-04-11 |
| Relief valve Grant 4,078,722 - Luckenbill March 14, 1 | 1978-03-14 |
| Bayonet-type closure for line stopper fittings Grant 3,991,791 - Luckenbill November 16, 1 | 1976-11-16 |
| Collet compression connection Grant 3,895,832 - Ellis , et al. July 22, 1 | 1975-07-22 |
| Cutter For Plastic Pipe And Drilling Tool Grant 3,870,431 - Luckenbill , et al. March 11, 1 | 1975-03-11 |
| Joint For Smooth End Or Flareless Pipe Grant 3,815,940 - Luckenbill June 11, 1 | 1974-06-11 |
| Gate Valve Structure Grant 3,763,880 - Leopold, Jr. , et al. October 9, 1 | 1973-10-09 |
| Fire Hydrant Grant 3,738,390 - Luckenbill June 12, 1 | 1973-06-12 |
| Method Of Tapping A Hole In A Main Through A Fitting Grant 3,734,112 - Finney , et al. May 22, 1 | 1973-05-22 |
| Compression Couplings Grant 3,669,475 - Luckenbill , et al. June 13, 1 | 1972-06-13 |
| Gate Valve Structure Grant 3,633,873 - Leopold, Jr. , et al. January 11, 1 | 1972-01-11 |
| Joint For Plastic Pipe Grant 3,596,933 - Luckenbill August 3, 1 | 1971-08-03 |
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