US2672857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arm-supported slingshot
Assignee: HENRY G LUMBARD
•
Filing: 1952-12-22
•
Granted: 1954-03-23
•
Expires: 1972-12-22
Abstract
No abstract record available.
Inventors
- 👤 Albert H Gauthier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:58
CPC Classifications
F; F41; F41B; F41B3/00; F41B3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1345561A
Cited
US1487973A
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US1584729A
Cited
US1606609A
Cited
US2532798A
Cited
US2625926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |