US1819522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum condensation control
Assignee: GUSTAVE M REININGER
•
Filing: 1927-04-22
•
Granted: 1931-08-18
•
Expires: 1947-04-22
Abstract
No abstract record available.
Inventors
- 👤 Rosenhagen Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:03
CPC Classifications
F; F24; F24D; F24D1/00; Y; Y10; Y10T; Y10T137/00; Y10T137/2713; Y10T137/7287; Y10T137/7313; Y10T137/7323; Y10T137/7358; Y10T137/7423; Y10T137/7439; Y10T137/7485; Y10T137/8593; Y10T137/86187; Y10T137/8622
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) | 1934-08-17 | 1935-02-16 | 1935-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-08-17 | 1939-02-16 | 1939-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-08-17 | 1943-02-16 | 1943-08-18 | $7700.00 | Window Closed / Lapsed |