Patent US2808046A successfully refreshed from Google Patents.
US2808046A
Expired / Lapsed
US
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Hot air furnace
Assignee: SYNCROMATIC CORP
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Filing: 1956-05-09
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Granted: 1957-10-01
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Expires: 1976-05-09
Abstract
No abstract record available.
Inventors
- 👤 Richard C Jaye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:26
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/02; F24H3/06; F24H3/065; F24H9/00; F24H9/18; F24H9/1854; F24H9/1877; F24H9/1881
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2249554A
Cited
US2404592A
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US2512384A
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US2582071A
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US2673558A
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US2555842A
Cited
US2715399A
Cited
US2658504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |