Patent US3379283A successfully refreshed from Google Patents.
US3379283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bidirectional rotary spring return mechanism
Assignee: USA
•
Filing: 1967-08-18
•
Granted: 1968-04-23
•
Expires: 1987-08-18
Abstract
No abstract record available.
Inventors
- 👤 Robert B Cole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:37
CPC Classifications
G; G05; G05G; G05G5/00; G05G5/04; G05G5/05
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2899193A
Cited
US2553248A
Cited
US2756610A
Cited
US2811201A
Cited
US2670198A
Cited
US3155855A
Cited
US3117771A
Cited
US7656178B2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |