Patent US3015804A successfully refreshed from Google Patents.
US3015804A
Expired / Lapsed
US
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Combined barricade and flashing signal light
Assignee: NORTHERN SIGNAL Co Inc
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Filing: 1961-05-17
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Granted: 1962-01-02
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Expires: 1981-05-17
Abstract
No abstract record available.
Inventors
- 👤 Ewing D Nunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:23
CPC Classifications
E; E01; E01F; E01F13/00; E01F13/02; F; F21; F21V; F21V33/00; F21V33/0064; F21V33/0076; G; G08; G08B; G08B5/00; G08B5/22; G08B5/36; G08B5/38; F21L; F21L4/00; F21S; F21S10/00; F21S10/06; F21W; F21W2111/00; F21W2111/02; Y; Y10; Y10S; Y10S362/00; Y10S362/812
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) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |