US2559415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Course indicating light beacon
Assignee: SPX Technologies Inc
•
Filing: 1948-11-23
•
Granted: 1951-07-03
•
Expires: 1968-11-23
Abstract
No abstract record available.
Inventors
- 👤 Oscar S Field
- 👤 Edmund W Moore
- 👤 Frank S Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:14
CPC Classifications
G; G08; G08G; G08G9/00; F; F21; F21V; F21V9/00; F21V9/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB189720941A
Cited
US1348855A
Cited
US1448922A
Cited
US1665426A
Cited
US2168137A
Cited
US2386268A
Cited
US2312294A
Cited
US2344263A
Cited
US2441877A
Cited
US2458414A
Cited
US2498294A
Cited
US2431240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |