US2514797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Raytheon Co
•
Filing: 1946-01-24
•
Granted: 1950-07-11
•
Expires: 1966-01-24
Abstract
No abstract record available.
Inventors
- 👤 Richard S Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:51
CPC Classifications
F; F28; F28F; F28F13/00; F28F13/06; F28F13/10; F28D; F28D7/00; F28D7/04; F28D7/08; F28D7/082; F28D7/085; F28D7/087; Y; Y10; Y10S; Y10S159/00; Y10S159/13; Y10S159/90
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-10 | 1954-01-09 | 1954-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-10 | 1958-01-09 | 1958-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-10 | 1962-01-09 | 1962-07-11 | $7700.00 | Window Closed / Lapsed |