US2611019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multicolored manual signal light
Assignee: Lake Erie Chemical Co
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Filing: 1949-04-13
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Granted: 1952-09-16
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Expires: 1969-04-13
Abstract
No abstract record available.
Inventors
- 👤 Edmund A Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:15
CPC Classifications
F; F21; F21V; F21V5/00; F21V5/006; F21V9/00; F21V9/08; F21V9/083; G; G09; G09F; G09F21/00; G09F21/02; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-16 | 1956-03-17 | 1956-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-16 | 1960-03-17 | 1960-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-16 | 1964-03-17 | 1964-09-16 | $7700.00 | Window Closed / Lapsed |