Crowhurst; David B.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Crowhurst; David B..The latest application filed is for "circuitry for use with coaxial cable distribution networks".
- Crowhurst; David B. - Ontario CA
- Crowhurst; David B. - Lindsay CA
- Crowhurst; David B. - Toronto Ontario CA
| Patent | Date |
|---|---|
| Circuitry for use with coaxial cable distribution networks Grant 6,081,169 - Romerein , et al. June 27, 2 | 2000-06-27 |
| Coaxial cable distribution network having a reversible directional coupler Grant 5,638,035 - Romerein , et al. June 10, 1 | 1997-06-10 |
| Transmission line transformer device Grant 5,220,297 - Crowhurst June 15, 1 | 1993-06-15 |
| Directional Communication Signal Tap Grant 3,641,464 - Crowhurst , et al. February 8, 1 | 1972-02-08 |
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