US2924965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leakage determining apparatus
Assignee: Individual
•
Filing: 1957-06-28
•
Granted: 1960-02-16
•
Expires: 1977-06-28
Abstract
No abstract record available.
Inventors
- 👤 Harold T Westerheim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:14
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/0041; G01L9/0072; G01L9/12; G01L9/125; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/32; G01M3/3236; G01M3/3263
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735368A
Cited
US1720934A
Cited
US2667786A
Cited
US2691297A
Cited
US2807167A
Cited
US2814203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |