US3497249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupler
Assignee: Outboard Marine Corp
•
Filing: 1968-02-05
•
Granted: 1970-02-24
•
Expires: 1988-02-05
Abstract
No abstract record available.
Inventors
- 👤 Chester Du Bois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:55
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/04; F16B7/0433; Y; Y10; Y10T; Y10T403/00; Y10T403/71; Y10T403/7129; Y10T403/7141
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1489835A
Cited
US1542074A
Cited
FR923971A
Cited
FR1309042A
Cited
US3177542A
Cited
US3276800A
Cited
US3404366A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |