US1561389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflex oven
Assignee: Krupp Stahl AG
•
Filing: 1924-02-07
•
Granted: 1925-11-10
•
Expires: 1944-02-07
Abstract
No abstract record available.
Inventors
- 👤 Wollers Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:13
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/62; F23L; F23L15/00; F23L15/04; Y; Y02; Y02E; Y02E20/00; Y02E20/34
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) | 1928-11-09 | 1929-05-11 | 1929-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-11-09 | 1933-05-11 | 1933-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-11-09 | 1937-05-11 | 1937-11-10 | $7700.00 | Window Closed / Lapsed |