US2180840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condenser apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1937-11-27
•
Granted: 1939-11-21
•
Expires: 1957-11-27
Abstract
No abstract record available.
Inventors
- 👤 Charles B Tuley
- 👤 David W R Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:29
CPC Classifications
F; F28; F28B; F28B1/00; F28B1/02; Y; Y10; Y10S; Y10S165/00; Y10S165/184; Y10S165/205; Y10S165/207; Y10S165/211; Y10S165/917
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) | 1942-11-20 | 1943-05-22 | 1943-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-11-20 | 1947-05-22 | 1947-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-11-20 | 1951-05-22 | 1951-11-21 | $7700.00 | Window Closed / Lapsed |