HK1000427A1 - Opaque projector - Google Patents

Opaque projector Download PDF

Info

Publication number
HK1000427A1
HK1000427A1 HK97102041A HK97102041A HK1000427A1 HK 1000427 A1 HK1000427 A1 HK 1000427A1 HK 97102041 A HK97102041 A HK 97102041A HK 97102041 A HK97102041 A HK 97102041A HK 1000427 A1 HK1000427 A1 HK 1000427A1
Authority
HK
Hong Kong
Prior art keywords
opaque projector
projector
opaque
Prior art date
Application number
HK97102041A
Other languages
English (en)
Chinese (zh)
Other versions
HK1000427B (en
Inventor
Koga Ritsuo
Original Assignee
Plus Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Plus Corporation filed Critical Plus Corporation
Publication of HK1000427A1 publication Critical patent/HK1000427A1/xx
Publication of HK1000427B publication Critical patent/HK1000427B/xx

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/06—Projectors or projection-type viewers; Accessories therefor affording only episcopic projection

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Projection Apparatus (AREA)
  • Transforming Electric Information Into Light Information (AREA)
HK97102041.9A 1989-06-15 1997-10-28 Opaque projector HK1000427B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7013889U JPH0311237U (enExample) 1989-06-15 1989-06-15
JP01070138 1989-06-15

Publications (2)

Publication Number Publication Date
HK1000427A1 true HK1000427A1 (en) 1998-03-20
HK1000427B HK1000427B (en) 1998-03-20

Family

ID=

Also Published As

Publication number Publication date
CA2014370A1 (en) 1990-12-15
JPH0311237U (enExample) 1991-02-04
DE4013426C2 (enExample) 1993-07-08
GB2232780A (en) 1990-12-19
FR2648577A1 (fr) 1990-12-21
DE4013426A1 (de) 1990-12-20
GB2232780B (en) 1993-08-04
GB9008087D0 (en) 1990-06-06
CA2014370C (en) 1993-11-02

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)