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US3540285A
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Apparatus for damping pulsating pressures in pressure gauges
Assignee: INST CERCETARI SI PROIECTARI P
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Filing: 1968-04-30
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Granted: 1970-11-17
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Expires: 1988-04-30
Abstract
No abstract record available.
Inventors
- 👤 Ioan Nicolau
- 👤 Valentin Eugen Hanciulescu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:05
CPC Classifications
G; G01; G01L; G01L19/00; G01L19/06; G01L19/0609; G01L19/0007; G01L19/0015; G01L19/0627; G01L19/0645
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2091764A
Cited
US3080758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |