Patent US2015960A successfully refreshed from Google Patents.
US2015960A
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Furnace construction and control means therefor
Assignee: LENNOX FURNACE Co
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Filing: 1934-03-26
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Granted: 1935-10-01
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Expires: 1954-03-26
Abstract
No abstract record available.
Inventors
- 👤 John W Norris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:48
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/20; F24H9/2064; F24H15/00; F24H15/10; F24H15/128; F24H15/20; F24H15/254; F24H15/30; F24H15/33; F24H3/00; F24H3/02; F24H3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-09-30 | 1939-04-01 | 1939-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-09-30 | 1943-04-01 | 1943-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-09-30 | 1947-04-01 | 1947-10-01 | $7700.00 | Window Closed / Lapsed |