Patent US1848197A successfully refreshed from Google Patents.
US1848197A
Expired / Lapsed
US
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Heater
Assignee: Individual
•
Filing: 1929-06-28
•
Granted: 1932-03-08
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Expires: 1949-06-28
Abstract
No abstract record available.
Inventors
- 👤 Ray Thomas
- 👤 Joshua R Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:08
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/04; F28F9/16; F28D; F28D7/00; F28D7/16; F28D7/1607; F28F9/22; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/401; Y10S165/402
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) | 1935-03-08 | 1935-09-07 | 1936-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-03-08 | 1939-09-07 | 1940-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-03-08 | 1943-09-07 | 1944-03-08 | $7700.00 | Window Closed / Lapsed |