US2988321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow control devices
Assignee: Manostat Corp
•
Filing: 1955-04-04
•
Granted: 1961-06-13
•
Expires: 1975-04-04
Abstract
No abstract record available.
Inventors
- 👤 Gilmont Roger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:03
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/02; F16K27/0254
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US351828A
Cited
FR361262A
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FR527074A
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GB362953A
Cited
US1895636A
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US2181059A
Cited
US2250517A
Cited
US2675204A
Cited
US2617171A
Cited
US2661019A
Cited
US2805040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |