US1967770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing refrigerating apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1933-04-28
•
Granted: 1934-07-24
•
Expires: 1953-04-28
Abstract
No abstract record available.
Inventors
- 👤 James G Ford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:33
CPC Classifications
F; F25; F25B; F25B31/00; F25B31/02; F25B31/023; Y; Y10; Y10T; Y10T29/00; Y10T29/46; Y10T29/49; Y10T29/4935; Y10T29/49359; Y10T29/4981; Y10T29/49812
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1937-07-23 | 1938-01-22 | 1938-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-07-23 | 1942-01-22 | 1942-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-07-23 | 1946-01-22 | 1946-07-24 | $7700.00 | Window Closed / Lapsed |