Patent US3130609A successfully refreshed from Google Patents.
US3130609A
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Method for making a dry shaver blade
Assignee: Wahl Clipper Corp
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Filing: 1961-11-30
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Granted: 1964-04-28
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Expires: 1981-11-30
Abstract
No abstract record available.
Inventors
- 👤 John F Wahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:02
CPC Classifications
B; B26; B26B; B26B19/00; B26B19/38; B26B19/384; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/496; Y10T428/00; Y10T428/24; Y10T428/24273
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE METHOD FOR MAKING A CURVED OUTER BLADE FOR A DRY SHAVER COMPRISING THE STEPS OF: SELECTING AN INITIALLY FLAT, THIN, RESILIENT PREHARDENED SHEET OF METAL; PERFORATING SAID SHEET WITH ROWS OF ELONGATED HAIR RECEIVING PERFORATIONS, THE PERFORATIONS IN ADJACENT ROWS STAGGERED; CURVING SAID SHEET ON AN AXIS GENERALLY PARALLEL TO SAID ROWS WHEREBY THE METAL ALONG THE LONG EDGES OF SAID PERFORATIONS STANDS OUTWARDLY FROM THE SURFACE OF AVERAGE SHEET CURVATURE, SAID SHEET ENGAGING RESILIENT BACK-UP MEANS;
Claim 2
Independent Claim
78 words
THE METHOD FOR MAKING A CURVED OUTER BLADE FOR A DRY SHAVER COMPRISING THE STEPS OF: SELECTING AN INITIALLY FLAT, THIN, RESILIENT PREHARDENED SHEET OF METAL; PERFORATING SAID SHEET WITH ROWS OF ELONGATED HAIR RECEIVING PERFORATIONS, THE PERFORATIONS IN ADJACENT ROWS STAGGERED; CURVING SAID SHEET ON AN AXIS GENERALLY PARALLEL TO SAID ROWS WHEREBY THE METAL ALONG THE LONG EDGES OF SAID PERFORATIONS STANDS OUTWARDLY FROM THE SURFACE OF AVERAGE SHEET CURVATURE, SAID SHEET ENGAGING RESILIENT BACK-UP MEANS;
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |