US2446760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leak detector for the protective well of a thermal instrument sensitive element
Assignee: PLATING PROCESSES Corp
•
Filing: 1945-05-24
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Granted: 1948-08-10
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Expires: 1965-05-24
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Hampson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:55
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/16; G01M3/002; F; F16; F16L; F16L2101/00; F16L2101/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US199442A
Cited
US738960A
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US1538042A
Cited
US1801791A
Cited
US2067440A
Cited
US1983166A
Cited
GB547840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |