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Patent US2938412A successfully refreshed from Google Patents.
US2938412A
Expired / Lapsed
US
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Sheet metal reforming tool
Assignee: Individual
•
Filing: 1957-06-14
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Granted: 1960-05-31
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Expires: 1977-06-14
Abstract
No abstract record available.
Inventors
- 👤 Floyd L Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:14
CPC Classifications
B; B25; B25D; B25D1/00; B25D1/02; B21; B21D; B21D1/00; B21D1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA485190A
Cited
US723764A
Cited
US974021A
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US1121085A
Cited
US1784683A
Cited
US1972540A
Cited
US2537244A
Cited
US2517345A
Cited
US2763172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |