US3510100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zero leakage poppet valve
Assignee: Bell Aerospace Corp
•
Filing: 1966-07-22
•
Granted: 1970-05-05
•
Expires: 1986-07-22
Abstract
No abstract record available.
Inventors
- 👤 Waldemar J Makusay
- 👤 Marinus C Bokelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:51
CPC Classifications
F; F16; F16K; F16K23/00; F16K31/00; F16K31/02; F16K31/06; F16K31/0682
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR30043E
Cited
US1950120A
Cited
US1991052A
Cited
US2479688A
Cited
US2720212A
Cited
US3026082A
Cited
US3101739A
Cited
US3326513A
Cited
US3373769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |