Patent US2733324A successfully refreshed from Google Patents.
US2733324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
B sabouni
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
•
Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:28
CPC Classifications
H; H05; H05B; H05B3/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087; Y10T29/49096
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
AN ELECTRICAL HEATING UNIT COMPRISING: A CASTING OF HEAT CONDUCTIVE MATERIAL; AN ELECTRICALLY INSULATING RESISTANCE WIRE EMBEDDED WITHIN SAID CASTING AND INTIMATELY SURROUNDED BY SAID CASTING MATERIAL: THE INSULATION ON SAID WIRE COMPRISING A FINELY WOVEN FLEXIBLE BRAID OF ELECTRICALLY INSULATED HIGH HEAT CONDUCTIVE STRANDS OF MATERIAL.
Claim 2
Dependent Claim
47 words
AN ELECTRICAL HEATING UNIT COMPRISING: A CASTING OF HEAT CONDUCTIVE MATERIAL; AN ELECTRICALLY INSULATING RESISTANCE WIRE EMBEDDED WITHIN SAID CASTING AND INTIMATELY SURROUNDED BY SAID CASTING MATERIAL: THE INSULATION ON SAID WIRE COMPRISING A FINELY WOVEN FLEXIBLE BRAID OF ELECTRICALLY INSULATED HIGH HEAT CONDUCTIVE STRANDS OF MATERIAL.
References Cited (Backward Citations)
US890858A
Cited
US1116586A
Cited
FR497673A
Cited
US2227931A
Cited
US2307626A
Cited
US2403022A
Cited
US2408149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |