US2478504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plant for the production and heating of compressed air
Assignee: Aktiengesellschaft fuer Technische Studien
•
Filing: 1946-02-12
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Granted: 1949-08-09
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Expires: 1966-02-12
Abstract
No abstract record available.
Inventors
- 👤 Ruegg Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:25
CPC Classifications
C; C21; C21B; C21B9/00; C21B9/10; F; F02; F02C; F02C1/00; F02C1/04; F02C1/05; F02C1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR601964A
Cited
US2098803A
Cited
US2163762A
Cited
US2227666A
Cited
US2242767A
Cited
US2282740A
Cited
US2457594A
Cited
US2434950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-08 | 1953-02-07 | 1953-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-08 | 1957-02-07 | 1957-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-08 | 1961-02-07 | 1961-08-09 | $7700.00 | Window Closed / Lapsed |