US3441040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve gear locking and emergency closing system
Assignee: General Electric Co
•
Filing: 1967-02-20
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Granted: 1969-04-29
•
Expires: 1987-02-20
Abstract
No abstract record available.
Inventors
- 👤 Russell A Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:22
CPC Classifications
F; F01; F01D; F01D21/00; F01D21/20; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/141; F01D17/145; F15; F15B; F15B11/00; F15B11/003; F15B2211/00; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/30525; F15B2211/315; F15B2211/31523; F15B2211/31529; F15B2211/50; F15B2211/505; F15B2211/50509; F15B2211/50518
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2998017A
Cited
US3342194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |