Patent US1370573A successfully refreshed from Google Patents.
US1370573A
Expired / Lapsed
US
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Machine for cutting gear-wheels
Assignee: SKF AB
•
Filing: 1918-09-30
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Granted: 1921-03-08
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Expires: 1938-09-30
Abstract
No abstract record available.
Inventors
- 👤 Wingqvist Erik Hjalmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:36
CPC Classifications
B; B23; B23F; B23F5/00; B23F5/20; B23F5/205; B23F5/207; Y; Y10; Y10T; Y10T409/00; Y10T409/10; Y10T409/101431; Y10T409/105883; Y10T409/106201
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) | 1924-03-07 | 1924-09-06 | 1925-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-03-07 | 1928-09-06 | 1929-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-03-07 | 1932-09-06 | 1933-03-08 | $7700.00 | Window Closed / Lapsed |