US2652813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure ratio sensing device
Assignee: Holley Performance Products Inc
•
Filing: 1951-10-24
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Granted: 1953-09-22
•
Expires: 1971-10-24
Abstract
No abstract record available.
Inventors
- 👤 Reuter John H Stresen
- 👤 Jr John T Karpus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:50
CPC Classifications
G; G01; G01L; G01L13/00; G01L13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2117800A
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US2285540A
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US2394284A
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US2446339A
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US2545703A
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US2507606A
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US2544427A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |