US2477361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk sharpening machine
Assignee: LEE HARDWICK
•
Filing: 1946-09-21
•
Granted: 1949-07-26
•
Expires: 1966-09-21
Abstract
No abstract record available.
Inventors
- 👤 Paul W Browne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:18
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/36; B24B3/46; B24B3/466
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US736829A
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US823857A
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US865627A
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US1481621A
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US1575307A
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US1642583A
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US1998783A
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US2185519A
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US2286293A
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US2244586A
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US2386563A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-25 | 1953-01-24 | 1953-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-25 | 1957-01-24 | 1957-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-25 | 1961-01-24 | 1961-07-26 | $7700.00 | Window Closed / Lapsed |