US2943667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expanding mandrel hydro-press
Assignee: Arrowsmith Tool & Die Corp
•
Filing: 1957-10-14
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Granted: 1960-07-05
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Expires: 1977-10-14
Abstract
No abstract record available.
Inventors
- 👤 Ewing Wayne
- 👤 Jr Lester B Backus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:40
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/30; B21D; B21D41/00; B21D41/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735473A
Cited
US684432A
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US1774762A
Cited
US1759267A
Cited
US2249805A
Cited
US2557722A
Cited
US2654413A
Cited
US2780271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |