Patent US3309499A successfully refreshed from Google Patents.
US3309499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiant heater
Assignee: Individual
•
Filing: 1962-10-25
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Granted: 1967-03-14
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Expires: 1982-10-25
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Carr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:11
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/0033
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
87 words
A RADIANT HEATER, SAID HEATER COMPRISING: (A) A HEATING LAMP; (B) SAID LAMP HAVING A FILAMENT AND LEAD-IN WIRES AT THE ENDS OF THE LAMP; (C) A HOUSING FOR THE END OF THE LAMP; (D) SAID HOUSING HAVING A CHAMBER, A CHIMNEY CONNECTING WITH THE CHAMBER, AND AN OPENING IN SAID CHAMBER; (E) A BASE; (F) SAID BASE HAVING TWO SPACED-APART HOLES; (G) MEANS TO REMOVABLY POSITION A CHIMNEY IN SAID HOLE; AND, (H) EACH END OF THE LAMP PROJECTING THROUGH THE OPENING AND INTO SAID CHAMBER.
References Cited (Backward Citations)
US2756319A
Cited
US2844699A
Cited
US2795640A
Cited
US2988634A
Cited
US2957154A
Cited
US3005081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |