US2429607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio traffic signaling system
Assignee: International Standard Electric Corp
•
Filing: 1940-03-14
•
Granted: 1947-10-28
•
Expires: 1960-03-14
Abstract
No abstract record available.
Inventors
- 👤 William H Capen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:50
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/09; G08G1/0962; G08G1/0967; G08G1/096708; G08G1/096716; G08G1/096733; G08G1/096758; G08G1/096766; G08G1/096775
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1711879A
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US1819508A
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US2024712A
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US2100498A
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US2171366A
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US2151951A
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US2131042A
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US2203807A
Cited
US2254218A
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US2255055A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-27 | 1951-04-28 | 1951-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-27 | 1955-04-28 | 1955-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-27 | 1959-04-28 | 1959-10-28 | $7700.00 | Window Closed / Lapsed |