Patent US3197757A successfully refreshed from Google Patents.
US3197757A
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US
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Portable traffic signal having changing color illumination
Assignee: Individual
•
Filing: 1963-04-19
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Granted: 1965-07-27
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Expires: 1983-04-19
Abstract
No abstract record available.
Inventors
- 👤 Porta Cesar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:37
CPC Classifications
F; F21; F21V; F21V23/00; F21V23/04; F21V23/0414; G; G08; G08G; G08G1/00; G08G1/09; G08G1/095; G08G1/0955; G09; G09F; G09F21/00; G09F21/02; F21Y; F21Y2113/00; F21Y2113/10; F21Y2113/13; F21Y2115/00; F21Y2115/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1371860A
Cited
US1800331A
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US2066145A
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US2283442A
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US2634407A
Cited
US2567046A
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US2695403A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |