US2237794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for reducing sheet metal
Assignee: American Rolling Mill Co
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Filing: 1937-05-12
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Granted: 1941-04-08
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Expires: 1957-05-12
Abstract
No abstract record available.
Inventors
- 👤 Sendzimir Tadeusz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:05
CPC Classifications
B; B21; B21B; B21B13/00; B21B13/14; B21B13/147; B21B13/02; B21B27/00; B21B27/06; B21B27/10; B21B2027/103; B21B38/00; B21B2038/002; B21B2201/00; B21B2201/18; B21B31/00; B21B31/16; B21B31/20; B21B31/22; B21B31/26; B21B41/00; B21B41/06
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) | 1944-04-07 | 1944-10-07 | 1945-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-04-07 | 1948-10-07 | 1949-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-04-07 | 1952-10-07 | 1953-04-08 | $7700.00 | Window Closed / Lapsed |