US1451166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal device
Assignee: CHICAGO RAILWAY SIGNAL AND SUP
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Filing: 1920-05-27
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Granted: 1923-04-10
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Expires: 1940-05-27
Abstract
No abstract record available.
Inventors
- 👤 Daniel J Mccarthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:14
CPC Classifications
B; B61; B61L; B61L5/00; B61L5/12; B61L5/18; F; F21; F21S; F21S41/00; F21S41/10; F21S41/12; F21S41/125; F21V; F21V9/00; F21V9/08; G; G10; G10K; G10K1/00; G10K1/06; G10K1/07; G10K1/072; G10K1/074
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1926-04-09 | 1926-10-09 | 1927-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-04-09 | 1930-10-09 | 1931-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-04-09 | 1934-10-09 | 1935-04-10 | $7700.00 | Window Closed / Lapsed |