US3429553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable ball valve apparatus
Assignee: Newport News Shipbuilding and Dry Dock Co
•
Filing: 1967-01-13
•
Granted: 1969-02-25
•
Expires: 1987-01-13
Abstract
No abstract record available.
Inventors
- 👤 Benjamin T Smith
- 👤 Julian P Ross Jr
- 👤 Joseph E Trexler Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:10
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/06; F16K5/0647; F16K35/00; F16K35/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US632934A
Cited
US1905684A
Cited
US1941839A
Cited
GB490789A
Cited
US2103536A
Cited
US2504297A
Cited
US2893681A
Cited
US3179121A
Cited
US3233630A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |