Patent US3077914A successfully refreshed from Google Patents.
US3077914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-balancing wheel for automotive vehicle
Assignee: Individual
•
Filing: 1961-06-28
•
Granted: 1963-02-19
•
Expires: 1981-06-28
Abstract
No abstract record available.
Inventors
- 👤 Earl W Fritts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:27
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/32; F16F15/36; F16F15/366
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1314005A
Cited
US659557A
Cited
US1209730A
Cited
GB282965A
Cited
US2687918A
Cited
US2909389A
Cited
US2992045A
Cited
GB832048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |