US3410577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling device
Assignee: Individual
•
Filing: 1966-09-15
•
Granted: 1968-11-12
•
Expires: 1986-09-15
Abstract
No abstract record available.
Inventors
- 👤 Wilbert L Luinstra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:52
CPC Classifications
B; B62; B62D; B62D25/00; B62D25/20; B62D25/209; B60; B60D; B60D1/00; B60D1/24; B60D1/36; B60D1/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3126210A
Cited
US1068334A
Cited
US1422189A
Cited
US2357540A
Cited
US2446223A
Cited
US2818276A
Cited
US3140881A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |