US1996625A
Expired / Lapsed
US
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Liquid heating system
Assignee: General Electric Co
•
Filing: 1930-12-09
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Granted: 1935-04-02
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Expires: 1950-12-09
Abstract
No abstract record available.
Inventors
- 👤 Alexander G Pendleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:26
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/18; F24H1/20; F24H1/201; F24H1/202; F24H15/00; F24H15/10; F24H15/16; F24H15/164; F24H15/174; F24H15/20; F24H15/212; F24H15/223; F24H15/225; F24H15/269; F24H15/30; F24H15/355; F24H15/37; F24H9/00; F24H9/20; F24H9/2007; F24H9/2014; F24H9/2021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-04-01 | 1938-10-01 | 1939-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-04-01 | 1942-10-01 | 1943-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-04-01 | 1946-10-01 | 1947-04-02 | $7700.00 | Window Closed / Lapsed |