US3332318A
Expired / Lapsed
US
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Assignee: Industrial Electronic Engineers Inc
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Filing: 1965-09-20
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Granted: 1967-07-25
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Expires: 1985-09-20
Abstract
No abstract record available.
Inventors
- 👤 Guy O Gessel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:49
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/04; G09G3/045; G03; G03B; G03B21/00; G03B21/14; G03B21/20; G09F; G09F9/00; G09F9/40; G09F9/405
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
IN A PROJECTION DISPLAY APPARATUS HAVING A TRANSLUCENT VIEWING SCREEN AND A PLURALITY OF CONVERGING PROJECTION SYSTEMS MOUNTED BEHIND THE SCREEN FOR SELECTIVELY PROJECTING DIFFERENT CHARACTERS ONTO THE SCREEN AND INCLUDING A PLURALITY OF LIGHT SOURCES CONSTITUTING A SEPARATE SOURCE FOR EACH PROJECTION SYSTEM, THE COMBINATION WHICH COMPRISES A PLURALITY OF COLLIMATING LENSES, A PLURALITY OF CHARACTER FORMING MASKS AND A PLURALITY OF CONDENSING
Claim 2
Dependent Claim
64 words
IN A PROJECTION DISPLAY APPARATUS HAVING A TRANSLUCENT VIEWING SCREEN AND A PLURALITY OF CONVERGING PROJECTION SYSTEMS MOUNTED BEHIND THE SCREEN FOR SELECTIVELY PROJECTING DIFFERENT CHARACTERS ONTO THE SCREEN AND INCLUDING A PLURALITY OF LIGHT SOURCES CONSTITUTING A SEPARATE SOURCE FOR EACH PROJECTION SYSTEM, THE COMBINATION WHICH COMPRISES A PLURALITY OF COLLIMATING LENSES, A PLURALITY OF CHARACTER FORMING MASKS AND A PLURALITY OF CONDENSING
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |