Patent US1441532A successfully refreshed from Google Patents.
US1441532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical apparatus
Assignee: General Electric Co
•
Filing: 1920-07-01
•
Granted: 1923-01-09
•
Expires: 1940-07-01
Abstract
No abstract record available.
Inventors
- 👤 Paul R Fortin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:31
CPC Classifications
H; H01; H01F; H01F21/00; H01F21/005
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) | 1926-01-08 | 1926-07-10 | 1927-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-01-08 | 1930-07-10 | 1931-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-01-08 | 1934-07-10 | 1935-01-09 | $7700.00 | Window Closed / Lapsed |