US2617859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condenser testing apparatus
Assignee: Individual
•
Filing: 1947-12-26
•
Granted: 1952-11-11
•
Expires: 1967-12-26
Abstract
No abstract record available.
Inventors
- 👤 Russell E Kraft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:27
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/50; G01R31/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2135017A
Cited
US2146073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-11 | 1956-05-12 | 1956-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-11 | 1960-05-12 | 1960-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-11 | 1964-05-12 | 1964-11-11 | $7700.00 | Window Closed / Lapsed |