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US1674774A
Expired / Lapsed
US
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Metal-sharpening machine
Assignee: GAISMAN
•
Filing: 1924-05-01
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Granted: 1928-06-26
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Expires: 1944-05-01
Abstract
No abstract record available.
Inventors
- 👤 Henry J Gaisman
- 👤 Schumacher Conrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:56
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/36; B24B3/48; B24B3/485
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1931-06-26 | 1931-12-26 | 1932-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-06-26 | 1935-12-26 | 1936-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-06-26 | 1939-12-26 | 1940-06-26 | $7700.00 | Window Closed / Lapsed |