US2668094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle operation recorder with slow speed compensator
Assignee: Individual
•
Filing: 1951-03-08
•
Granted: 1954-02-02
•
Expires: 1971-03-08
Abstract
No abstract record available.
Inventors
- 👤 Clarence C Chelf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:11
CPC Classifications
G; G01; G01P; G01P1/00; G01P1/12; G01P1/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1992134A
Cited
US1061121A
Cited
US1196856A
Cited
US1275263A
Cited
US1516808A
Cited
US1484125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |