Patent US3494032A successfully refreshed from Google Patents.
US3494032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety razor blade having an internally sharpened edge and externally blunt edges
Assignee: Gillette Co LLC
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Filing: 1967-06-15
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Granted: 1970-02-10
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Expires: 1987-06-15
Abstract
No abstract record available.
Inventors
- 👤 Norman Clifford Welsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:00
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/54; B26B21/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1840199A
Cited
US1988167A
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US2020116A
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US2035110A
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US2019475A
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US2335875A
Cited
US2582913A
Cited
US3109237A
Cited
US3176398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |