US3356829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiant heating device
Assignee: Individual
•
Filing: 1966-02-07
•
Granted: 1967-12-05
•
Expires: 1986-02-07
Abstract
No abstract record available.
Inventors
- 👤 Frank J Brandenburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:07
CPC Classifications
F; F24; F24C; F24C7/00; F24C7/04; F24C7/043; F24H; F24H7/00; F24H7/06; F24H7/062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A SPACE HEATING DEVICE COMPRISING HEAT EMITTING MEANS, A CORRUGATED PANEL MADE OF A HEAT RADIATING MATERIAL CONDUCTIVELY BONDED TO THE HEAT EMITTING MEANS, A COMPLETELY NON-METALLIC HEAT STORING MASTIC BONDED TO SAID PANEL ON ONE SIDE THEREOF EMBEDDING THE HEAT EMITTING MEANS THEREIN, A HEAT DISTRIBUTION GRID EMBEDDED N
Claim 2
Dependent Claim
50 words
A SPACE HEATING DEVICE COMPRISING HEAT EMITTING MEANS, A CORRUGATED PANEL MADE OF A HEAT RADIATING MATERIAL CONDUCTIVELY BONDED TO THE HEAT EMITTING MEANS, A COMPLETELY NON-METALLIC HEAT STORING MASTIC BONDED TO SAID PANEL ON ONE SIDE THEREOF EMBEDDING THE HEAT EMITTING MEANS THEREIN, A HEAT DISTRIBUTION GRID EMBEDDED N
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |