US2650028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal safety temperature control
Assignee: General Controls Co
•
Filing: 1950-11-04
•
Granted: 1953-08-25
•
Expires: 1970-11-04
Abstract
No abstract record available.
Inventors
- 👤 Richard D Grayson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:41
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/027; F23N5/10; F23N5/107; G; G05; G05D; G05D23/00; G05D23/01; G05D23/02; G05D23/024; G05D23/026; G05D23/027; G05D23/08; G05D23/10; Y; Y10; Y10T; Y10T137/00; Y10T137/1407; Y10T137/1516
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) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |