US2518941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulator for heating apparatus
Assignee: SATCHWELL
•
Filing: 1945-11-08
•
Granted: 1950-08-15
•
Expires: 1965-11-08
Abstract
No abstract record available.
Inventors
- 👤 Satchwell Leonard
- 👤 Wilson William Harry
- 👤 Chinn Arthur John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:15
CPC Classifications
H; H01; H01H; H01H61/00; H01H61/01; H01H61/013
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US791691A
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US1292773A
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US1501017A
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US1783904A
Cited
GB305077A
Cited
US2238219A
Cited
US2347014A
Cited
US2285677A
Cited
US2352439A
Cited
US2360265A
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 |