Patent US685560A successfully refreshed from Google Patents.
US1421918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing for steam turbines
Assignee: Pyle National Co
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Filing: 1919-03-03
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Granted: 1922-07-04
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Expires: 1939-03-03
Abstract
No abstract record available.
Inventors
- 👤 Charles W Dake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:29
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/16
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) | 1925-07-03 | 1926-01-02 | 1926-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-07-03 | 1930-01-02 | 1930-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-07-03 | 1934-01-02 | 1934-07-04 | $7700.00 | Window Closed / Lapsed |