US2615940A
Expired / Lapsed
US
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Electrokinetic transducing method and apparatus
Assignee: Individual
•
Filing: 1949-10-25
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Granted: 1952-10-28
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Expires: 1969-10-25
Abstract
No abstract record available.
Inventors
- 👤 Williams Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:14
CPC Classifications
G; G01; G01H; G01H11/00; G01H11/06; G01L; G01L9/00; G01L9/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |