US2416253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switch
Assignee: Siemens Energy and Automation Inc
•
Filing: 1943-11-22
•
Granted: 1947-02-18
•
Expires: 1963-11-22
Abstract
No abstract record available.
Inventors
- 👤 William C Furnas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:24
CPC Classifications
H; H01; H01H; H01H73/00; H01H73/22; H01H73/30; H01H71/00; H01H71/10; H01H71/12; H01H71/14; H01H71/20; H01H71/205
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2085018A
Cited
US1988848A
Cited
US2027541A
Cited
US2287875A
Cited
US2296157A
Cited
US2310531A
Cited
US2342945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-17 | 1950-08-19 | 1951-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-17 | 1954-08-19 | 1955-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-17 | 1958-08-19 | 1959-02-18 | $7700.00 | Window Closed / Lapsed |