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Patent US1937408A successfully refreshed from Google Patents.
US1937408A
Expired / Lapsed
US
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Machine tool
Assignee: Ingersoll Milling Machine Co
•
Filing: 1929-08-03
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Granted: 1933-11-28
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Expires: 1949-08-03
Abstract
No abstract record available.
Inventors
- 👤 John R Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:28
CPC Classifications
B; B23; B23C; B23C1/00; B23C1/12; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30784; Y10T409/307952; Y10T409/308232; Y10T409/308288; Y10T409/308456; Y10T409/309576; Y10T409/309912
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) | 1936-11-27 | 1937-05-29 | 1937-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-11-27 | 1941-05-29 | 1941-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-11-27 | 1945-05-29 | 1945-11-28 | $7700.00 | Window Closed / Lapsed |