US1837568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic turbine
Assignee: Individual
•
Filing: 1923-04-14
•
Granted: 1931-12-22
•
Expires: 1943-04-14
Abstract
No abstract record available.
Inventors
- 👤 Moody Lewis Ferry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:04
CPC Classifications
F; F03; F03B; F03B3/00; F03B3/04; F03B3/06; F03B3/12; F03B3/14; F03B3/145; F03B3/16; F03B3/18; F03B3/183; F05; F05B; F05B2260/00; F05B2260/70; F05B2260/76; Y; Y02; Y02E; Y02E10/00; Y02E10/20
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) | 1934-12-21 | 1935-06-22 | 1935-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-12-21 | 1939-06-22 | 1939-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-12-21 | 1943-06-22 | 1943-12-22 | $7700.00 | Window Closed / Lapsed |