Patent US2420057A successfully refreshed from Google Patents.
US2420057A
Expired / Lapsed
US
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Inserted blade cutter and clamping means
Assignee: SUPER TOOL Co
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Filing: 1943-05-13
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Granted: 1947-05-06
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Expires: 1963-05-13
Abstract
No abstract record available.
Inventors
- 👤 Milton J Steffes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:56
CPC Classifications
B; B23; B23D; B23D77/00; B23D77/02; B23D77/04; B23D77/042; B23C; B23C5/00; B23C5/16; B23C5/20; B23C5/22; B23C5/24; B23C5/2462; B23C5/2468; B23C5/2472; B23D2277/00; B23D2277/20; B23D2277/206; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1906; Y10T407/1908; Y10T407/1912; Y10T407/1914; Y10T407/192; Y10T407/1922
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US621288A
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US1348279A
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US1411799A
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US1397119A
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US1538929A
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US1687891A
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US1681675A
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US1951100A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-05 | 1950-11-04 | 1951-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-05 | 1954-11-04 | 1955-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-05 | 1958-11-04 | 1959-05-06 | $7700.00 | Window Closed / Lapsed |