US2615634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace control device
Assignee: HOME FURNACE CO
•
Filing: 1950-10-02
•
Granted: 1952-10-28
•
Expires: 1970-10-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank Harbin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:56
CPC Classifications
F; F24; F24D; F24D19/00; F24D19/10; F24D19/1084; F24H; F24H15/00; F24H15/30; F24H15/305; F24H15/31; F24H15/345; F24H15/355; F24H15/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1925455A
Cited
US2073676A
Cited
US2160381A
Cited
US2139052A
Cited
US2266563A
Cited
US2329636A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |