US2575492A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow-measuring apparatus
Assignee: Thomas A Edison Inc
•
Filing: 1946-04-13
•
Granted: 1951-11-20
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Expires: 1966-04-13
Abstract
No abstract record available.
Inventors
- 👤 Karl H Dittmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:22
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/20; G01F1/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1401299A
Cited
GB333625A
Cited
US1912188A
Cited
US2082539A
Cited
US2266316A
Cited
US2377275A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |