Patent US2657460A successfully refreshed from Google Patents.
US2657460A
Expired / Lapsed
US
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Razor blade
Assignee: FIRM BLADE RAZOR Co Inc
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Filing: 1949-01-11
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Granted: 1953-11-03
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Expires: 1969-01-11
Abstract
No abstract record available.
Inventors
- 👤 Michael J Cerino
- 👤 Errol F Kingsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:43
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/08; B26B21/14; B26B21/30; B26B21/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1734554A
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US1805509A
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US1832834A
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US2125501A
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US1960406A
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US2043594A
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FR777505A
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US2309780A
Cited
US2361921A
Cited
US2364236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |