US2940309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow mass meter
Assignee: Rockwell Manufacturing Co
•
Filing: 1954-05-04
•
Granted: 1960-06-14
•
Expires: 1974-05-04
Abstract
No abstract record available.
Inventors
- 👤 Karlby Henning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:08
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/76; G01F1/78; G01F1/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1347732A
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US2299406A
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US2537310A
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US2602330A
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US2612777A
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US2591478A
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US2714310A
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US2697986A
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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) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |