Patent US2423007A successfully refreshed from Google Patents.
US3572223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laterally-disengageable highway marker assembly
Assignee: Individual
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Filing: 1969-08-26
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Granted: 1971-03-23
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Expires: 1989-08-26
Abstract
Abstract THE INVENTION RELATES TO A LATERALLY-DISENGAGEABLE UPRIGHT HIGHWAY MARKER ASSEMBLY THAT IS RELATIVELY UPRIGHTLY STABLE YET THAT IS ADAPTED TO LATERALLY DISENGAGE FROM ITS LOWER EARTH ANCHORING PORTION UPON THE APPLICATION OF RELATIVELY LOW LATERAL FORCES TO SAID HIGHWAY MARKER ASSEMBLY, SO THAT WHEN A MOTOR VEHICLE ACCIDENTALLY STRAYS FROM THE HIGHWAY AND STRIKES THE UPRIGHT SIGNPOST PORTION OF THE MARKER ASSEMBLY, THE LOFTY SIGNPOST PORTION WILL READILY LATERALLY DISENGAGE FROM THE EARTH ANCHORING PORTION SO AS TO MINIMIZE THE LIKELIHOOD AND SEVERITY OF INJURY TO THE MOTOR VEHICLE''S OCCUPANTS.
Inventors
- 👤 Ralph L Vierregger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:52
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/60; E01F9/623; E01F9/631; E01F9/635; F; F16; F16B; F16B2200/00; F16B2200/50; F16B2200/509; Y; Y10; Y10T; Y10T403/00; Y10T403/61
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) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |