DK100396C - Teaching apparatus consisting of an image projector and a sound repeater connected thereto. - Google Patents

Teaching apparatus consisting of an image projector and a sound repeater connected thereto.

Info

Publication number
DK100396C
DK100396C DK101857A DK101857A DK100396C DK 100396 C DK100396 C DK 100396C DK 101857 A DK101857 A DK 101857A DK 101857 A DK101857 A DK 101857A DK 100396 C DK100396 C DK 100396C
Authority
DK
Denmark
Prior art keywords
image projector
teaching apparatus
apparatus consisting
repeater connected
sound repeater
Prior art date
Application number
DK101857A
Other languages
Danish (da)
Inventor
Eduard Ritter
Original Assignee
Eduard Ritter
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 Eduard Ritter filed Critical Eduard Ritter
Application granted granted Critical
Publication of DK100396C publication Critical patent/DK100396C/en

Links

DK101857A 1956-12-04 1957-03-20 Teaching apparatus consisting of an image projector and a sound repeater connected thereto. DK100396C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH100396X 1956-12-04

Publications (1)

Publication Number Publication Date
DK100396C true DK100396C (en) 1964-11-23

Family

ID=4358644

Family Applications (1)

Application Number Title Priority Date Filing Date
DK101857A DK100396C (en) 1956-12-04 1957-03-20 Teaching apparatus consisting of an image projector and a sound repeater connected thereto.

Country Status (1)

Country Link
DK (1) DK100396C (en)

Similar Documents

Publication Publication Date Title
FR1178601A (en) Electro-photographic reproduction equipment
DK108606C (en) Apparatus for producing reverberation of an electroacoustic signal.
DK100396C (en) Teaching apparatus consisting of an image projector and a sound repeater connected thereto.
FR1196858A (en) Speaker device
FR1152433A (en) Speaker training
FR1176709A (en) Submarine training
FR1128983A (en) Improvements to photographic, cinematographic and other cameras
FR1186604A (en) Photographic reproduction apparatus
FR1112528A (en) Further training in cameras and photographic reproduction
CH381523A (en) Photographic color reproducing apparatus
FR1262101A (en) Sound cinematographic projector
FR1075796A (en) Further training in photographic reproduction devices
FR67521E (en) Micro-viewer and projector
FR65540E (en) Further development of cameras
DK95658C (en) Method of making a flexible and flat compressible hose.
AT189504B (en) Underwater breathing apparatus
BE541623A (en) PHOTOCONDUCTOR MATERIALS AND APPARATUS.
FR1145931A (en) Photographic reproduction apparatus
DK83130C (en) Method and apparatus for producing captions on film.
DK99729C (en) System for synchronously conveying a film in a film reproducer and a tone tape in a tone tape apparatus separated therefrom.
FR1133251A (en) Further training in cameras
FR1101726A (en) Further training in cameras
DK98160C (en) Method for photographic production of a halftone image.
CH375992A (en) Photographic color reproducing apparatus
BE540006A (en) IMPROVEMENTS TO PHOTOGRAPHIC DEVICES.