Langford; Frederick
Patent Applications and Registrations
Patent applications and USPTO patent grants for Langford; Frederick.The latest application filed is for "waterslide with level equalization conduits coupling between run-out lanes".
- Langford; Frederick - Cape May Court House NJ
| Patent | Date |
|---|---|
| Waterslide with level equalization conduits coupling between run-out lanes Grant 7,066,821 - Langford June 27, 2 | 2006-06-27 |
| Waterslide with level equalization conduits coupling between run-out lanes App 20050288113 - Langford, Frederick | 2005-12-29 |
| Train coupleable flotation tube for waterslides Grant 6,053,790 - Langford April 25, 2 | 2000-04-25 |
| Waterslide with uphill runs and progressive gravity feed Grant 5,779,553 - Langford July 14, 1 | 1998-07-14 |
| Controllable waterslide weir Grant 5,453,054 - Langford September 26, 1 | 1995-09-26 |
| Waterslide with uphill run and flotation device therefor Grant 5,230,662 - Langford July 27, 1 | 1993-07-27 |
| Coupleable flotation apparatus forming lines and arrays Grant 5,020,465 - Langford June 4, 1 | 1991-06-04 |
| Waterslide with uphill run and flotation device therefor Grant 5,011,134 - Langford April 30, 1 | 1991-04-30 |
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