US3353783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closed fluid system for sealing valve closure elements
Assignee: Individual
•
Filing: 1966-09-12
•
Granted: 1967-11-21
•
Expires: 1986-09-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas J Bolling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:17
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/16; F16K3/20; F16K3/207
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2229871A
Cited
US2567032A
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US2660397A
Cited
US2746712A
Cited
US2865597A
Cited
US2726842A
Cited
US3034760A
Cited
US3095004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |