Patent US1937985A successfully refreshed from Google Patents.
US1937985A
Expired / Lapsed
US
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Roll grinding or similar machine
Assignee: FARREL BIRMINGHAM CO
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Filing: 1930-01-08
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Granted: 1933-12-05
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Expires: 1950-01-08
Abstract
No abstract record available.
Inventors
- 👤 Carl F Schnuck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:11
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/08; B23Q11/085; Y; Y10; Y10T; Y10T409/00; Y10T409/50; Y10T409/500984; Y10T82/00; Y10T82/25; Y10T82/2566
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) | 1936-12-04 | 1937-06-05 | 1937-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-12-04 | 1941-06-05 | 1941-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-12-04 | 1945-06-05 | 1945-12-05 | $7700.00 | Window Closed / Lapsed |