Patent US3413840A successfully refreshed from Google Patents.
US3413840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leak detection system
Assignee: Individual
•
Filing: 1966-04-19
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Granted: 1968-12-03
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Expires: 1986-04-19
Abstract
No abstract record available.
Inventors
- 👤 Norman K Basile
- 👤 Donald R Yearwood
- 👤 Donald W Brideweser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:47
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/48; B65D90/50; B65D90/501; B65D90/503; F; F17; F17C; F17C13/00; F17C13/12; F17C13/126; G; G01; G01M; G01M3/00; G01M3/002; G01M3/02; G01M3/26; G01M3/32; F17C2260/00; F17C2260/02; F17C2260/026; F17C2260/03; F17C2260/035; F17C2260/038
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) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |