US2622435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sediment tester head
Assignee: LILLIAN KING
•
Filing: 1948-09-15
•
Granted: 1952-12-23
•
Expires: 1968-09-15
Abstract
No abstract record available.
Inventors
- 👤 Walter D Lucas
- 👤 Joseph S Kessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:25
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/06; G01N15/0606; G01N15/0618; Y; Y10; Y10T; Y10T137/00; Y10T137/794; Y10T137/8049
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1083467A
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US2197909A
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US2271715A
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US2208032A
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US2272898A
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US2336120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |