US3399833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low intensity radiant heater system and burner therefor
Assignee: Combustion Research Corp
•
Filing: 1966-12-14
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Granted: 1968-09-03
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Expires: 1986-12-14
Abstract
No abstract record available.
Inventors
- 👤 Arthur C W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:29
CPC Classifications
F; F24; F24D; F24D5/00; F24D5/06; F24D5/08; F23; F23C; F23C3/00; F23C3/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |