Patent US5716347A successfully refreshed from Google Patents.
US3498321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-sealing valve assembly
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1967-10-16
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Granted: 1970-03-03
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Expires: 1987-10-16
Abstract
No abstract record available.
Inventors
- 👤 Paul C Barrett
- 👤 Robert J Kolar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:21
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/02; F16K15/00; F16K15/14; F16K15/141; F16K7/04; F16K7/06; Y; Y10; Y10T; Y10T137/00; Y10T137/3584; Y10T137/7722; Y10T137/7837; Y10T137/7876; Y10T137/7879
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3010477A
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GB899236A
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US3154940A
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US3416567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |