US2940411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible boat anchor
Assignee: Individual
•
Filing: 1957-09-26
•
Granted: 1960-06-14
•
Expires: 1977-09-26
Abstract
No abstract record available.
Inventors
- 👤 Russell W Bartels
- 👤 Clarence E Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:56
CPC Classifications
B; B63; B63B; B63B21/00; B63B21/24; B63B21/243
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US327767A
Cited
US558389A
Cited
US652162A
Cited
US1373067A
Cited
US1632529A
Cited
US2568006A
Cited
US2816522A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |