US2844963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature and pressure compensating device for gas meters
Assignee: SPRAGUE METER Co
•
Filing: 1955-10-07
•
Granted: 1958-07-29
•
Expires: 1975-10-07
Abstract
No abstract record available.
Inventors
- 👤 Charles W Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:02
CPC Classifications
G; G01; G01F; G01F15/00; G01F15/02; G01F15/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1035860A
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US1355075A
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US1881572A
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US2059547A
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US2262678A
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US2308655A
Cited
US2438934A
Cited
US2348593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |