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US3169442A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for plural image projection

Assignee: Shibuya Hoppmann Corp
•
Filing: 1962-06-21
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Granted: 1965-02-16
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Expires: 1982-06-21
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Abstract

No abstract record available.

Inventors

  • 👤 Victor L Reddle
  • 👤 Kurt H Hoppmann
  • 👤 Stanley F Staples

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 08:57
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/132

Claims Analysis

Total Claims: 1
Claim 1
Independent Claim 177 words
AN APPARATUS FOR PLURAL IMAGE PROJECTION UPON A SCREEN COMPRISING: (A) A PROJECTOR HOUSING SUPPORTING SAID SCREEN AND A FIRST PROJECTOR AND A SECOND PROJECTOR; (B) A MIRROR SYSTEM CONSISTING OF PRIMARY, SECONDARY AND TERTIARY MIRRORS MOUNTED IN SAID HOUSING SO AS TO REFLECT IMAGES FROM SAID FIRST AND SECOND PROJECTORS ONTO SAID SCREEN; (C) A TRANSPARENCY STAGE PLATE POSITIONED AS AN EXTERIOR PORTION OF SAID HOUSING TOGETHER WITH A LIGHT SOURCE SUPPORTED OUTWARDLY FROM SAID HOUSING SO THAT EXTERIOR LIGHT IS TRANSMITTABLE THROUGH SAID STAGE PLATE ONTO SAID TERTIARY MIRROR; (D) AN ADJUSTABLE LENS POSITIONED IN SAID HOUSING INTERMEDIATE SAID TRANSPARENCY STAGE PLATE AND SAID MIRROR SYSTEM SO AS TO FOCUS THE IMAGE FROM A TRANSPARENCY POSITIONED ON SAID STAGE PLATE; (E) A TRANSPARENCY PRIMARY REFLECTING MIRROR POSITIONED INTERMEDIATE SAID TRANSPARENCY STAGE PLATE AND SAID LENS SO AS TO REFLECT SAID LIGHT UPON SAID MIRROR SYSTEM; AND (F) A SUPPLEMENTAL SECONDARY MIRROR POSITIONED IN SAID HOUSING INTERMEDIATE SAID LENS AND SAID TERTIARY MIRROR SO AS TO REFLECT ONTO SAID TERTIARY MIRROR LIGHT FOCUSED BY SAID LENS.

References Cited (Backward Citations)

US1158429A Cited
US1282224A Cited
US1954787A Cited
US2273936A Cited
US2351618A Cited
US2525957A Cited
US3040622A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1968-02-16 1968-08-17 1969-02-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1972-02-16 1972-08-17 1973-02-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1976-02-16 1976-08-17 1977-02-16 $7700.00 Window Closed / Lapsed

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