Patent US3444921A successfully refreshed from Google Patents.
US1142852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnet and solenoid.
Assignee: Cutler Hammer Manufacturing Co
•
Filing: 1913-10-10
•
Granted: 1915-06-15
•
Expires: 1933-10-10
Abstract
No abstract record available.
Inventors
- 👤 Arthur Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:10
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/20
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) | 1918-06-14 | 1918-12-14 | 1919-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-06-14 | 1922-12-14 | 1923-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-06-14 | 1926-12-14 | 1927-06-15 | $7700.00 | Window Closed / Lapsed |