Patent US2605638A successfully refreshed from Google Patents.
US2605638A
Expired / Lapsed
US
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Flowmeter
Assignee: Sunoco Inc
•
Filing: 1946-04-13
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Granted: 1952-08-05
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Expires: 1966-04-13
Abstract
No abstract record available.
Inventors
- 👤 John M Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:06
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)
DE215355C
Cited
US1401299A
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US1479663A
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US1581957A
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US1953819A
Cited
GB369588A
Cited
US2319363A
Cited
US2383757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-05 | 1956-02-04 | 1956-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-05 | 1960-02-04 | 1960-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-05 | 1964-02-04 | 1964-08-05 | $7700.00 | Window Closed / Lapsed |