US1044261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial grindstone.
Assignee: Gesellschaft Otto Schmidt's Patent Herculessteinem B H
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Filing: 1912-05-10
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Granted: 1912-11-12
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Expires: 1932-05-10
Abstract
No abstract record available.
Inventors
- 👤 Otto Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:36
CPC Classifications
B; B24; B24D; B24D5/00; B24D5/02; B24D5/04
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) | 1915-11-12 | 1916-05-13 | 1916-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1919-11-12 | 1920-05-13 | 1920-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1923-11-12 | 1924-05-13 | 1924-11-12 | $7700.00 | Window Closed / Lapsed |