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US2886771A
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Fluid-testing device
Assignee: GEORGE A RUBISSOW
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Filing: 1955-06-14
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Granted: 1959-05-12
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Expires: 1975-06-14
Abstract
No abstract record available.
Inventors
- 👤 Vincent Louis Claude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:21
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/4166; G01N33/00; G01N33/48; G01N33/483; G01N33/487; G01N33/49; G01N33/4915
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1518211A
Cited
US2260840A
Cited
US2540425A
Cited
US2674719A
Cited
FR1070566A
Cited
GB725586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |