Patent US1055807A successfully refreshed from Google Patents.
US1055807A
Expired / Lapsed
US
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Machine for grinding rollers.
Assignee: Hoffmann Manufacturing Co Ltd
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Filing: 1912-02-16
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Granted: 1913-03-11
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Expires: 1932-02-16
Abstract
No abstract record available.
Inventors
- 👤 Otto Alwin Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:04
CPC Classifications
B; B24; B24B; B24B11/00; B24B11/02; B24B11/04; B24B11/10
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) | 1916-03-10 | 1916-09-09 | 1917-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1920-03-10 | 1920-09-09 | 1921-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1924-03-10 | 1924-09-09 | 1925-03-11 | $7700.00 | Window Closed / Lapsed |