Patent US2451404A successfully refreshed from Google Patents.
US2451404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inductive electrical indicator with compensated damper
Assignee: Stewart Warner Corp
•
Filing: 1943-08-20
•
Granted: 1948-10-12
•
Expires: 1963-08-20
Abstract
No abstract record available.
Inventors
- 👤 Horace M Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:45
CPC Classifications
G; G01; G01P; G01P1/00; G01P1/003
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1667624A
Cited
US2159330A
Cited
US1055911A
Cited
US1732726A
Cited
US1907343A
Cited
US1962929A
Cited
US2175890A
Cited
US2188570A
Cited
US2196402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-12 | 1952-04-12 | 1952-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-12 | 1956-04-12 | 1956-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-12 | 1960-04-12 | 1960-10-12 | $7700.00 | Window Closed / Lapsed |