Patent US2111045A successfully refreshed from Google Patents.
US2111045A
Expired / Lapsed
US
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Lapping machine
Assignee: Individual
•
Filing: 1935-08-07
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Granted: 1938-03-15
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Expires: 1955-08-07
Abstract
No abstract record available.
Inventors
- 👤 Robert S Drummond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:29
CPC Classifications
B; B23; B23F; B23F23/00; B23F23/12; B23F23/1237; B23F23/1281; B23F19/00; B23F19/002; B23F19/007; B23F19/02; B23F19/04; Y; Y10; Y10T; Y10T29/00; Y10T29/47; Y10T29/477
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) | 1941-03-14 | 1941-09-13 | 1942-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-03-14 | 1945-09-13 | 1946-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-03-14 | 1949-09-13 | 1950-03-15 | $7700.00 | Window Closed / Lapsed |