US3445087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure ball valve
Assignee: Boeing North American Inc
•
Filing: 1966-09-30
•
Granted: 1969-05-20
•
Expires: 1986-09-30
Abstract
No abstract record available.
Inventors
- 👤 Werner K Priese
- 👤 David J Davies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:10
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/06; F16K5/0663; F16K5/0673; F16K5/0678; F16K5/0626; F16K5/0636; F16K5/08; F16K5/14; F16K5/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2201895A
Cited
US2509656A
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DE1117958B
Cited
US3122352A
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US3096786A
Cited
US3266769A
Cited
US3166291A
Cited
US3252684A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |