Patent US2157354A successfully refreshed from Google Patents.
US2157354A
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US
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Embossing metal plates
Assignee: AO Smith Corp
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Filing: 1938-02-11
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Granted: 1939-05-09
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Expires: 1958-02-11
Abstract
No abstract record available.
Inventors
- 👤 Donald W Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:11
CPC Classifications
B; B21; B21C; B21C1/00; B21C37/00; B21C37/06; B21C37/15; B21C37/28; B21C37/29; B21C37/292; B21C37/30; B21D; B21D19/00; B21D19/08; B21D19/088; B21K; B21K23/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/496
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) | 1942-05-08 | 1942-11-07 | 1943-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-05-08 | 1946-11-07 | 1947-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-05-08 | 1950-11-07 | 1951-05-09 | $7700.00 | Window Closed / Lapsed |