US2796757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leak testing and detecting apparatus for piping systems
Assignee: Universal Controls Corp
•
Filing: 1954-08-23
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Granted: 1957-06-25
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Expires: 1974-08-23
Abstract
No abstract record available.
Inventors
- 👤 Charles D Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:55
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/06; G01M3/08; G01M3/20; G01M3/22; F; F16; F16L; F16L2101/00; F16L2101/30
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |