US3270201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photo-luminescent display means
Assignee: Individual
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Filing: 1964-03-03
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Granted: 1966-08-30
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Expires: 1984-03-03
Abstract
No abstract record available.
Inventors
- 👤 George K C Hardesty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:39
CPC Classifications
G; G09; G09F; G09F13/00; G09F13/20; B; B60; B60K; B60K35/00; B60K35/20; B60Q; B60Q3/00; B60Q3/10; B60Q3/14; G04; G04B; G04B19/00; G04B19/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
MEANS PROVIDING BACKLIGHTED BACK FIELD ILLUMINATION OF OBJECTS COMPRISING A PHOTO-EXCITING SOURCE, FIRST TRANSMITTANCE MEANS TRANSMITTING A FIRST SPECTRAL BANDWIDTH FROM SAID SOURCE, SECOND TRANSMITTANCE MEANS TRANSMITTING A SECOND SPECTRAL BANDWIDTH OTHER THAN SAID FIRST SPECTRAL BANDWIDTH, SAID FIRST TRANSMITTANCE MEANS BEING INTERMEDIATE SAID SOURCE AND SAID SECOND TRANSMITTANCE MEANS, AND OBJECT MEANS OF PHOTO-LUMINESCENT MATERIAL INTERMEDIATE SAID FIRST AND SECOND TRANSMITTANCE MEANS, SAID FIRST AND SECOND TRANSMITTANCE MEANS IN COMBINATION, BEING SUBSTANTIALLY COMPLETELY OPAQUE TO VISIBLE LIGHT WHEREBY SAID OBJECT MEANS APPEAR INDIVIDUALLY ILLUMINATED AGAINST A BLACK FIELD.
Claim 2
Dependent Claim
89 words
MEANS PROVIDING BACKLIGHTED BACK FIELD ILLUMINATION OF OBJECTS COMPRISING A PHOTO-EXCITING SOURCE, FIRST TRANSMITTANCE MEANS TRANSMITTING A FIRST SPECTRAL BANDWIDTH FROM SAID SOURCE, SECOND TRANSMITTANCE MEANS TRANSMITTING A SECOND SPECTRAL BANDWIDTH OTHER THAN SAID FIRST SPECTRAL BANDWIDTH, SAID FIRST TRANSMITTANCE MEANS BEING INTERMEDIATE SAID SOURCE AND SAID SECOND TRANSMITTANCE MEANS, AND OBJECT MEANS OF PHOTO-LUMINESCENT MATERIAL INTERMEDIATE SAID FIRST AND SECOND TRANSMITTANCE MEANS, SAID FIRST AND SECOND TRANSMITTANCE MEANS IN COMBINATION, BEING SUBSTANTIALLY COMPLETELY OPAQUE TO VISIBLE LIGHT WHEREBY SAID OBJECT MEANS APPEAR INDIVIDUALLY ILLUMINATED AGAINST A BLACK FIELD.
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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |