Patent US2756404A successfully refreshed from Google Patents.
US2756404A
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US
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Fluid testing apparatus
Assignee: Cook Electric Co
•
Filing: 1952-05-15
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Granted: 1956-07-24
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Expires: 1972-05-15
Abstract
No abstract record available.
Inventors
- 👤 Alton D Anderson
- 👤 John C Bellamy
- 👤 Francis P Mcgowan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:58
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/02; G01N29/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2083344A
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US2283429A
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US2547875A
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US2190141A
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US2280226A
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US2596023A
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US2549022A
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US2588748A
Cited
FR998262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |