US3273191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Knife implement
Assignee: Individual
•
Filing: 1964-05-21
•
Granted: 1966-09-20
•
Expires: 1984-05-21
Abstract
No abstract record available.
Inventors
- 👤 William H Chambers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:22
CPC Classifications
E; E04; E04F; E04F21/00; E04F21/28; E04F21/32; B; B26; B26B; B26B3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A BLADE FOR A KNIFE IMPLEMENT HAVING A POINTED TIP AND AT LEAST TWO EDGES WHICH TAPER OUTWARDLY IN OPPOSITE DIRECTIONS FROM SAID TIP; A PLURALITY OF TEETH ON EACH OF SAID EDGES, SAID TEETH PROGRESSIVELY INCREASING IN SIZE AS THE EDGES OF SAID BLADE ARE REARWARDLY TRAVERSED FROM SAID TOP AND ANGULARLY DISPOSED WITH RESPECT TO A PLANE PERPEDICULAR TO THE AXIS OF SAID BLADE, WITH THE ANGLE BEING PROGRESSIVELY DECREASED AS THE EDGE OF SAID BLADE IS REARWARDLY TRAVERSED FROM SAID TIP; AND A PLURALITY OF PERFORATIONS PROVIDING UPRISING TIPS ON ONE SIDE OF SAID BLADE FORMED IN SAID BLADE ALONG SAID EDGES ADJACENT TO SAID TEETH.
Claim 2
Dependent Claim
109 words
A BLADE FOR A KNIFE IMPLEMENT HAVING A POINTED TIP AND AT LEAST TWO EDGES WHICH TAPER OUTWARDLY IN OPPOSITE DIRECTIONS FROM SAID TIP; A PLURALITY OF TEETH ON EACH OF SAID EDGES, SAID TEETH PROGRESSIVELY INCREASING IN SIZE AS THE EDGES OF SAID BLADE ARE REARWARDLY TRAVERSED FROM SAID TOP AND ANGULARLY DISPOSED WITH RESPECT TO A PLANE PERPEDICULAR TO THE AXIS OF SAID BLADE, WITH THE ANGLE BEING PROGRESSIVELY DECREASED AS THE EDGE OF SAID BLADE IS REARWARDLY TRAVERSED FROM SAID TIP; AND A PLURALITY OF PERFORATIONS PROVIDING UPRISING TIPS ON ONE SIDE OF SAID BLADE FORMED IN SAID BLADE ALONG SAID EDGES ADJACENT TO SAID TEETH.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |