US2999162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for leak testing
Assignee: ELECTRO CHEMICAL LAB CORP
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Filing: 1958-09-22
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Granted: 1961-09-05
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Expires: 1978-09-22
Abstract
No abstract record available.
Inventors
- 👤 Robert E Fearon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:35
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/20; G01M3/22; G01M3/226; G01M3/229
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) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |