US3464322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deformable diaphragm
Assignee: MICHEL J J PEQUIGNOT
•
Filing: 1967-10-26
•
Granted: 1969-09-02
•
Expires: 1987-10-26
Abstract
No abstract record available.
Inventors
- 👤 Michel J J Pequignot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:17
CPC Classifications
F; F16; F16J; F16J3/00; F16J3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1619866A
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US2376634A
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US2376635A
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US2549597A
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US3327322A
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US3343864A
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US3379411A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |