US2458401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light signal for railroads
Assignee: SPX Technologies Inc
•
Filing: 1945-11-02
•
Granted: 1949-01-04
•
Expires: 1965-11-02
Abstract
No abstract record available.
Inventors
- 👤 Edmund W Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:49
CPC Classifications
B; B61; B61L; B61L5/00; B61L5/12; B61L5/18; B61L5/1809; B61L5/1818
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1363566A
Cited
US1627895A
Cited
US1969089A
Cited
US1840098A
Cited
US1932022A
Cited
US2068805A
Cited
US2333967A
Cited
US2365474A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-04 | 1952-07-05 | 1953-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-04 | 1956-07-05 | 1957-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-04 | 1960-07-05 | 1961-01-04 | $7700.00 | Window Closed / Lapsed |