US2872237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic hooks
Assignee: Dempster Brothers Inc
•
Filing: 1955-07-06
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Granted: 1959-02-03
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Expires: 1975-07-06
Abstract
No abstract record available.
Inventors
- 👤 Jr Lafayette Bogle Standifer
- 👤 Fred S Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:59
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/64; B60P1/6409
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2445106A
Cited
US2729496A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |