Patent US1486771A successfully refreshed from Google Patents.
US1486771A
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Method of producing deeper tooth spaces in toothed wheels and means therefor
Assignee: Ljungstroms Angturbin AB
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Filing: 1922-09-19
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Granted: 1924-03-11
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Expires: 1942-09-19
Abstract
No abstract record available.
Inventors
- 👤 Ljungstrom Fredrik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:36
CPC Classifications
B; B23; B23F; B23F17/00; Y; Y10; Y10T; Y10T409/00; Y10T409/10; Y10T409/107791; Y10T409/10795; Y10T409/108109; Y10T409/108745
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) | 1927-03-11 | 1927-09-10 | 1928-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-03-11 | 1931-09-10 | 1932-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-03-11 | 1935-09-10 | 1936-03-11 | $7700.00 | Window Closed / Lapsed |