Patent US1926494A successfully refreshed from Google Patents.
US1926494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating device
Assignee: Individual
•
Filing: 1933-05-11
•
Granted: 1933-09-12
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Expires: 1953-05-11
Abstract
No abstract record available.
Inventors
- 👤 Morterud Knut Kristoffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:46
CPC Classifications
F; F28; F28D; F28D9/00; F28D9/0006; F28F; F28F1/00; F28F1/02; F28F2250/00; F28F2250/10; F28F2250/104; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/401; Y10S165/405; Y10S165/413
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) | 1936-09-11 | 1937-03-13 | 1937-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-09-11 | 1941-03-13 | 1941-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-09-11 | 1945-03-13 | 1945-09-12 | $7700.00 | Window Closed / Lapsed |