US3427464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed governing systems for steam turbines
Assignee: CA Parsons and Co Ltd
•
Filing: 1965-08-12
•
Granted: 1969-02-11
•
Expires: 1985-08-12
Abstract
No abstract record available.
Inventors
- 👤 William George Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:53
CPC Classifications
G; G05; G05D; G05D13/00; G05D13/08; F; F01; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/141; F01D17/145; F01D17/20; F01D17/22; F01D17/26; F01D21/00; F01D21/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1935292A
Cited
US1858939A
Cited
US1950594A
Cited
US2000753A
Cited
US2243225A
Cited
US2404968A
Cited
US2828448A
Cited
US3188812A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |