US2841926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Knife sharpener casing
Assignee: Supreme Products Corp
•
Filing: 1954-05-06
•
Granted: 1958-07-08
•
Expires: 1974-05-06
Abstract
No abstract record available.
Inventors
- 👤 William A Lebus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:15
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/36; B24B3/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US175497A
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US2220425A
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US2497643A
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US2655067A
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US2775075A
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FR981178A
Cited
US2550250A
Cited
US2673914A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |