Patent US2231251A successfully refreshed from Google Patents.
US3514856A
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Razor blade configuration
Assignee: Corning Glass Works
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Filing: 1967-10-30
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Granted: 1970-06-02
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Expires: 1987-10-30
Abstract
No abstract record available.
Inventors
- 👤 Harold E Camp
- 👤 James W Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:00
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/54; B26B21/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR557482A
Cited
GB364927A
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GB429029A
Cited
GB428172A
Cited
US2244053A
Cited
US2262588A
Cited
US2555214A
Cited
US2705834A
Cited
US3349488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |