US1847848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making worm gears
Assignee: Columbia Axle Co
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Filing: 1927-07-26
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Granted: 1932-03-01
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Expires: 1947-07-26
Abstract
No abstract record available.
Inventors
- 👤 Frederick H Ragan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:39
CPC Classifications
B; B23; B23F; B23F11/00; B21; B21H; B21H5/00; B21H5/02; B21H5/022; B23P; B23P15/00; B23P15/14; Y; Y10; Y10T; Y10T29/00; Y10T29/47; Y10T29/477; Y10T29/49; Y10T29/49462; Y10T29/49467; Y10T29/49469; Y10T407/00; Y10T407/17; Y10T407/1715; Y10T407/172
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) | 1935-03-01 | 1935-08-31 | 1936-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-03-01 | 1939-08-31 | 1940-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-03-01 | 1943-08-31 | 1944-03-01 | $7700.00 | Window Closed / Lapsed |