Patent US2168865A successfully refreshed from Google Patents.
Patent US1611608A successfully refreshed from Google Patents.
US1611608A
Expired / Lapsed
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Self-centering flexible rolling-mill coupling
Assignee: ARTHUR A OLSON
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Filing: 1925-05-28
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Granted: 1926-12-21
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Expires: 1945-05-28
Abstract
No abstract record available.
Inventors
- 👤 Charles A Psilander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:13
CPC Classifications
B; B21; B21B; B21B35/00; B21B35/14; B21B35/142; B21B35/143; B21B35/144
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) | 1929-12-20 | 1930-06-21 | 1930-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-12-20 | 1934-06-21 | 1934-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-12-20 | 1938-06-21 | 1938-12-21 | $7700.00 | Window Closed / Lapsed |