Marquardt Industrial Products Co.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Marquardt Industrial Products Co..The latest application filed is for "broken rail detector".
- Marquardt Industrial Products Co. - Cucamonga CA
| Patent | Date |
|---|---|
| Broken Rail Detector Grant 3,696,243 - Risely October 3, 1 | 1972-10-03 |
| Train Length Measurement System Grant 3,641,338 - Peel , et al. February 8, 1 | 1972-02-08 |
| Railroad Grade Crossing Protection System Grant 3,614,418 - Pell October 19, 1 | 1971-10-19 |
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