US2637900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Razor blade cartridge unit
Assignee: Individual
•
Filing: 1947-10-17
•
Granted: 1953-05-12
•
Expires: 1967-10-17
Abstract
No abstract record available.
Inventors
- 👤 Marcus C Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:59
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/08; B26B21/14; B26B21/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2050244A
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US2138353A
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US2270790A
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US2350837A
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US2226964A
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US2288301A
Cited
US2305600A
Cited
US2346144A
Cited
US2392432A
Cited
US2392869A
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US2446715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |