US3179788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid circulation type electric baseboard space heater
Assignee: Individual
•
Filing: 1963-08-06
•
Granted: 1965-04-20
•
Expires: 1983-08-06
Abstract
No abstract record available.
Inventors
- 👤 Erich J Uhlig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:51
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/002; F24H3/004; F24H3/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A LIQUID CIRCULATION TYPE BASEBOARD SPACE HEATER COMPRISING A LOWER HORIZONTAL PIPE AND AN UPPER HORIZONTAL PIPE CONNECTED TOGETHER TO FORM A CLOSED FLUID CIRCULATION LOOP, AN ELONGATED ELECTRICAL HEATING ELEMENT EXTENDING THROUGH A PORTION OF THE LENGTH OF SAID LOWER PIPE, AND A VENTURI SECTION LOCATED IN SAID LOWER PIPE AT A POINT REMOVED FROM SAID HEATING ELEMENT.
Claim 2
Dependent Claim
59 words
A LIQUID CIRCULATION TYPE BASEBOARD SPACE HEATER COMPRISING A LOWER HORIZONTAL PIPE AND AN UPPER HORIZONTAL PIPE CONNECTED TOGETHER TO FORM A CLOSED FLUID CIRCULATION LOOP, AN ELONGATED ELECTRICAL HEATING ELEMENT EXTENDING THROUGH A PORTION OF THE LENGTH OF SAID LOWER PIPE, AND A VENTURI SECTION LOCATED IN SAID LOWER PIPE AT A POINT REMOVED FROM SAID HEATING ELEMENT.
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |