US3567307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflective markers
Assignee: Prismo Universal Corp
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Filing: 1969-10-08
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Granted: 1971-03-02
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Expires: 1989-10-08
Abstract
Abstract A reflective marker which includes small glass spheres partially embedded in pigmented binder having a top coating of transparent resin covering the marker which covers the exposed portion of each sphere with a coating that is thicker at the center of the exposed portion of the sphere than at the sides thereof; a relatively thick coating of transparent resin may also be located in the valleys between the glass spheres beneath the top coating; and a transparent resin and beneath the top coating.
Inventors
- 👤 Donald C Rideout
- 👤 Luke M Shuler
- 👤 William H Riley Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:51
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/12; G02B5/126; G02B5/128
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |