Patent US3555682A successfully refreshed from Google Patents.
US3555682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guarded razor blade
Assignee: Philip Morris USA Inc
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Filing: 1969-02-03
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Granted: 1971-01-19
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Expires: 1989-02-03
Abstract
Abstract A RAZOR BLADE HAVING A SELF-CONTAINED PERMANENTLY ATTACHED GUARD COMPRISING A THIN FLEXIBLE SHEET WITH A ROW OF ALIGNED HOLES AND INTERVENING LANDS, THE HOLES AND LANDS BEING LOOPED OVER THE BLADE CUTTING EDGE AND THE SHEET BEING SECURED TO THE OPPOSITE BLADE SURFACES, THE SHEET HAVING AN OUTER SURFACE OF LOW COEFFICIENT OF FRICTION MATERIAL, AND THE HOLES, AND LANDS HAVING SPECIFIED DIMENSIONS AND RELATIONSHIPS, THE BLADE BEING CAPABLE OF USE IN A SIMPLE HOLDER WITHOUT OTHER GUARD MEANS BUT ALSO ADVANTAGEOUSLY EMBODIED IN A RAZOR COMBINATION INCLUDING A GUARD BAR WITH AN INCREASED BLADE EDGE EXPOSURE OVER THAT OF A CONVENTIONAL SIMILAR TYPE RAZOR EMPLOYING A NAKED BLADE.
Inventors
- 👤 Tibor S Laszlo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:56
CPC Classifications
B; B26; B26B; B26B21/00; B26B21/40; B26B21/4006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |