US2578340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot water heating system and control therefor
Assignee: Miller Co
•
Filing: 1948-05-06
•
Granted: 1951-12-11
•
Expires: 1968-05-06
Abstract
No abstract record available.
Inventors
- 👤 Lancey Ralph W De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:13
CPC Classifications
F; F24; F24D; F24D19/00; F24D19/10; F24D19/1006; F24D19/1066; F24H; F24H15/00; F24H15/30; F24H15/355; F24H15/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1921708A
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US2159284A
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US2073676A
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US2139052A
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US2162337A
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US2354027A
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US2460762A
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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) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |