Patent US2518863A successfully refreshed from Google Patents.
US2518863A
Expired / Lapsed
US
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Heating jacket for auto drain valves
Assignee: Individual
•
Filing: 1947-10-17
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Granted: 1950-08-15
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Expires: 1967-10-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles C Camden
- 👤 William O Camden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:15
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/14; F16L59/16; F16L59/161; H; H05; H05B; H05B3/00; H05B3/02; H05B3/06; H05B3/20; H05B3/22; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6606; Y10T137/6851; Y10T137/7036
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1312554A
Cited
US1147396A
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US1240449A
Cited
US1744598A
Cited
US1706997A
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US1748510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |