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US3293983A
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Non-stereo depth perception projection display device
Assignee: MARITZA GUZMAN ESQUILIN
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Filing: 1965-01-28
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Granted: 1966-12-27
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Expires: 1985-01-28
Abstract
No abstract record available.
Inventors
- 👤 Tad J Gaudyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:14
CPC Classifications
G; G02; G02B; G02B30/00; G02B30/50; G02B30/56; G03; G03B; G03B21/00; G03B21/54; G03B21/56; G03B21/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
AN OPTICALLY PROJECTING DISPLAY DEVICE COMPRISING: A LIGHT SOURCE; A DISPLAYED OBJECT SUPPORTING MEANS POSITIONED IN THE PATH OF SAID LIGHT SOURCE, A PARABOLIC MIRROR FOCUSED SUBSTANTIALLY UPON SAID DISPLAYED OBJECT SUPPORTING MEANS IN SUCH MANNER AS TO REFLECT RAYS FROM THE DISPLAYED OBJECT IN DIVERGING PATHS; AND A FRESNEL LENS; SAID FRESNEL LENS BEING FOCUSED BY REFLECTION UPON SAID MIRROR UPON SAID OBJECT SUPPORTING MEANS.
Claim 2
Dependent Claim
66 words
AN OPTICALLY PROJECTING DISPLAY DEVICE COMPRISING: A LIGHT SOURCE; A DISPLAYED OBJECT SUPPORTING MEANS POSITIONED IN THE PATH OF SAID LIGHT SOURCE, A PARABOLIC MIRROR FOCUSED SUBSTANTIALLY UPON SAID DISPLAYED OBJECT SUPPORTING MEANS IN SUCH MANNER AS TO REFLECT RAYS FROM THE DISPLAYED OBJECT IN DIVERGING PATHS; AND A FRESNEL LENS; SAID FRESNEL LENS BEING FOCUSED BY REFLECTION UPON SAID MIRROR UPON SAID OBJECT SUPPORTING MEANS.
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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |