AU91538A - Improvements in or relating to methods of producing a covering layer on band-shaped material intended for mechanical sound records which canbe optically reproduced and copied - Google Patents

Improvements in or relating to methods of producing a covering layer on band-shaped material intended for mechanical sound records which canbe optically reproduced and copied

Info

Publication number
AU91538A
AU91538A AU915/38A AU91538A AU91538A AU 91538 A AU91538 A AU 91538A AU 915/38 A AU915/38 A AU 915/38A AU 91538 A AU91538 A AU 91538A AU 91538 A AU91538 A AU 91538A
Authority
AU
Australia
Prior art keywords
canbe
copied
relating
band
producing
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
AU915/38A
Other versions
AU106838B2 (en
Inventor
Jan Broos Cornelis Johannes Dippel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of AU106838B2 publication Critical patent/AU106838B2/en
Publication of AU91538A publication Critical patent/AU91538A/en
Expired legal-status Critical Current

Links

AU915/38A 1938-03-05 Improvements in or relating to methods of producing a covering layer on band-shaped material intended for mechanical sound records which canbe optically reproduced and copied Expired AU106838B2 (en)

Publications (2)

Publication Number Publication Date
AU106838B2 AU106838B2 (en) 1939-03-16
AU91538A true AU91538A (en) 1939-03-16

Family

ID=

Similar Documents

Publication Publication Date Title
AU106838B2 (en) Improvements in or relating to methods of producing a covering layer on band-shaped material intended for mechanical sound records which canbe optically reproduced and copied
AU91538A (en) Improvements in or relating to methods of producing a covering layer on band-shaped material intended for mechanical sound records which canbe optically reproduced and copied
AU106311B2 (en) Improvements in or relating to methods of reproducing sound records in a plurity of sound traces
CA375425A (en) Sound recording and reproducing apparatus
CA377585A (en) Sound recording and reproducing apparatus
CA377317A (en) Sound reproducing and recording mechanism
AU105771B2 (en) Improvements in or relating to sound film recording systems
AU104772B2 (en) Improvements in or relating to devices for recording or reproducing picture-or picture-and-sound films
AU337537A (en) Improvements in or relating to sound film recording systems
AU104880B2 (en) Improvements in and relating to sound recording mechanism
CA371008A (en) Sound record forming method
CA374134A (en) Colour film recording and reproducing method
CA362054A (en) Sound recording and reproducing method
CA372883A (en) Coloured and sound film production
CA383880A (en) Sound recording and reproducing apparatus
AU547637A (en) Improvements in or relating to devices for recording or reproducing picture-or picture-and-sound films
AU114109B2 (en) Improvements in or relating to sound recording and reproducing systems
CA384724A (en) Sound recording and reproducing system
CA376877A (en) Sound record production
CA381920A (en) Sound film reproducing apparatus
AU105763B2 (en) Improvements in or relating to sound recording and reproducing apparatus
AU109774B2 (en) Improvements in or relating to layers which are sensitized means of a diazonium compound and methods of manufacturing the same
AU2839A (en) Improvements in or relating to devices for recording and reproducing films
AU101697B2 (en) Improvements in and relating tothe reproduction of sound from record films
CA360636A (en) Sound recording and reproducing system