Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5504314 | Monitoring and/or directing system for parking areas | — | 1996-04-02 |
| 5500515 | Method of using a parking card for operating a parking barrier for pay parking | — | 1996-03-19 |
| 5498859 | Parking card for the charge-related actuation of a parking barrier | — | 1996-03-12 |
| 5487459 | Collection and issuing apparatus for round parking cards | — | 1996-01-30 |
| 5437901 | Parking card for the charge-related actuation of a parking barrier | — | 1995-08-01 |
| 4488389 | Securing means for log construction | — | 1984-12-18 |
| 4429500 | Building logs with weathertight joints | — | 1984-02-07 |
| 4344263 | Building log with high thermal insulation characteristics | — | 1982-08-17 |