US1796644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for regulating cooling of troughs
Assignee: FERRIC ENGINEERING Co
•
Filing: 1927-04-13
•
Granted: 1931-03-17
•
Expires: 1947-04-13
Abstract
No abstract record available.
Inventors
- 👤 Frank G Carrington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:04
CPC Classifications
B; B22; B22D; B22D13/00; B22D13/10; B22D13/101; B22D13/105; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87249; Y10T137/87571; Y10T137/87676; Y10T137/87684; Y10T137/877; Y10T137/87708; Y10T137/87748
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) | 1934-03-16 | 1934-09-15 | 1935-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-03-16 | 1938-09-15 | 1939-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-03-16 | 1942-09-15 | 1943-03-17 | $7700.00 | Window Closed / Lapsed |