Patent US2491148A successfully refreshed from Google Patents.
US2491148A
Expired / Lapsed
US
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Anvil-die and jig for holes in sheet metal
Assignee: Individual
•
Filing: 1948-10-09
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Granted: 1949-12-13
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Expires: 1968-10-09
Abstract
No abstract record available.
Inventors
- 👤 William E Zingsheim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:49
CPC Classifications
B; B23; B23D; B23D29/00; B23D29/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |