US3279283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making razor blades
Assignee: Individual
•
Filing: 1965-05-10
•
Granted: 1966-10-18
•
Expires: 1985-05-10
Abstract
No abstract record available.
Inventors
- 👤 Burnie J Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:51
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/60; B21D53/64; B21D53/645
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
THE STEP IN THE METHOD OF MAKING A SAFETY RAZOR BLADE BLANK WHICH COMPRISES FIRST ADVANCING A FOIL-LIKE CORE WHICH IS MADE OF MATERIAL WHICH MAY BE SHARPENED AND WHICH HAS TWO FACES BUT IS THIN AND FLEXIBLE AND REQUIRES REINFORCEMENT FOR THE SHAVING OPERATION, HOLDING THE CORE IN A PLANAR POSITION WHILE IT ADVANCES AND SECUR-
Claim 2
Dependent Claim
57 words
THE STEP IN THE METHOD OF MAKING A SAFETY RAZOR BLADE BLANK WHICH COMPRISES FIRST ADVANCING A FOIL-LIKE CORE WHICH IS MADE OF MATERIAL WHICH MAY BE SHARPENED AND WHICH HAS TWO FACES BUT IS THIN AND FLEXIBLE AND REQUIRES REINFORCEMENT FOR THE SHAVING OPERATION, HOLDING THE CORE IN A PLANAR POSITION WHILE IT ADVANCES AND SECUR-
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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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |