US1883124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indirectly heated steam generator
Assignee: Schmidtsche Heissdampf GmbH
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Filing: 1931-12-15
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Granted: 1932-10-18
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Expires: 1951-12-15
Abstract
No abstract record available.
Inventors
- 👤 Trede Hans
- 👤 Otto H Hartmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:40
CPC Classifications
F; F22; F22B; F22B21/00; F22B21/34; F22B21/36; F22B21/363; F22B1/00; F22B1/02; F22B1/08; F22B1/12
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) | 1935-10-18 | 1936-04-18 | 1936-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-10-18 | 1940-04-18 | 1940-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-10-18 | 1944-04-18 | 1944-10-18 | $7700.00 | Window Closed / Lapsed |