Frielinghaus; Klaus H.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Frielinghaus; Klaus H..The latest application filed is for "broken rail and/or broken rail joint bar detection".
- Frielinghaus; Klaus H. - Rochester NY
- Frielinghaus; Klaus H. - NY
| Patent | Date |
|---|---|
| Broken rail and/or broken rail joint bar detection Grant 4,886,226 - Frielinghaus December 12, 1 | 1989-12-12 |
| Combination frequency loop coupling for railway track signalling Grant 4,878,638 - Hoelscher , et al. November 7, 1 | 1989-11-07 |
| Automatic counting system for passages Grant 4,528,679 - Shahbaz , et al. July 9, 1 | 1985-07-09 |
| Track circuit principle wheel detector Grant 4,351,504 - Frielinghaus September 28, 1 | 1982-09-28 |
| Track signalling system Grant 4,074,879 - Clark , et al. February 21, 1 | 1978-02-21 |
| Flat wheel detector Grant 4,058,279 - Frielinghaus November 15, 1 | 1977-11-15 |
| Jointless high frequency track circuit systems for railroads Grant 4,053,128 - Frielinghaus , et al. October 11, 1 | 1977-10-11 |
| Interlocking track circuits Grant 3,897,921 - West , et al. August 5, 1 | 1975-08-05 |
| Boat Berthing Monitor Incorporating Sonar And Doppler Radar Techniques Grant 3,707,717 - Frielinghaus December 26, 1 | 1972-12-26 |
| Apparatus And Method For Deriving A Uniform Time Warning Grant 3,610,920 - Frielinghaus October 5, 1 | 1971-10-05 |
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