US2434950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air supply arrangement for hot-air power plant furnaces
Assignee: Individual
•
Filing: 1944-10-26
•
Granted: 1948-01-27
•
Expires: 1964-10-26
Abstract
No abstract record available.
Inventors
- 👤 Nettel Frederick
- 👤 Kreltner Johann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:12
CPC Classifications
F; F02; F02C; F02C1/00; F02C1/04; F02C1/05; F02C1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1388480A
Cited
US2172708A
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US667744A
Cited
GB190020853A
Cited
US1277895A
Cited
US1281016A
Cited
US1864448A
Cited
GB274441A
Cited
GB292292A
Cited
US2305785A
Cited
US2268270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-26 | 1951-07-28 | 1952-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-26 | 1955-07-28 | 1956-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-26 | 1959-07-28 | 1960-01-27 | $7700.00 | Window Closed / Lapsed |