US3052790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiant heater
Assignee: Individual
•
Filing: 1959-11-09
•
Granted: 1962-09-04
•
Expires: 1979-11-09
Abstract
No abstract record available.
Inventors
- 👤 Thomas W Diehl
- 👤 Tyloer M Harkreader
- 👤 Samuel A Chalmers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:47
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/08; F24C7/00; F24C7/06; F24C7/062; F24C7/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2054669A
Cited
GB489850A
Cited
US2298175A
Cited
US2319109A
Cited
US2599029A
Cited
US2856500A
Cited
US2868558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |