Patent US2304067A successfully refreshed from Google Patents.
US2304067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of rotors for electric machines
Assignee: Fairbanks Morse and Co
•
Filing: 1940-07-29
•
Granted: 1942-12-08
•
Expires: 1960-07-29
Abstract
No abstract record available.
Inventors
- 👤 Gordon R Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:12
CPC Classifications
B; B22; B22D; B22D19/00; B22D19/0054; B22D13/00; B22D13/02; B22D13/026; Y; Y10; Y10S; Y10S164/00; Y10S164/10
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) | 1945-12-07 | 1946-06-08 | 1946-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-12-07 | 1950-06-08 | 1950-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-12-07 | 1954-06-08 | 1954-12-08 | $7700.00 | Window Closed / Lapsed |