US1872298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switch mechanism
Assignee: Westinghouse Electric Corp
•
Filing: 1927-11-23
•
Granted: 1932-08-16
•
Expires: 1947-11-23
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Kehoe
- 👤 Lee W Mccullough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:31
CPC Classifications
H; H02; H02B; H02B11/00; H02B11/24; H01; H01H; H01H1/00; H01H1/64
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) | 1935-08-16 | 1936-02-15 | 1936-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-08-16 | 1940-02-15 | 1940-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-08-16 | 1944-02-15 | 1944-08-16 | $7700.00 | Window Closed / Lapsed |