US3392956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Individual
•
Filing: 1965-12-30
•
Granted: 1968-07-16
•
Expires: 1985-12-30
Abstract
No abstract record available.
Inventors
- 👤 Frees Joseph H De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:13
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/07; F16K31/00; F16K31/12; F16K31/122; F16K31/1221; F16K31/1228
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2731803A
Cited
US1473474A
Cited
US1534136A
Cited
US1514233A
Cited
US2549689A
Cited
US2726840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |