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
GB8687/50A
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.)
Dictaphone Corp
Original Assignee
Dictaphone Corp
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 Dictaphone CorpfiledCriticalDictaphone Corp
Publication of GB684628ApublicationCriticalpatent/GB684628A/en
G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
Landscapes
Paints Or Removers
(AREA)
Abstract
684,628. Sound recording apparatus. DICTAPHONE CORPORATION. April 6, 1950 [April 8, 1949], No. 8687/50. Drawings .to Specification. Class 40 (ii). In a recording apparatus employing an invisible sound track, such as a magnetic sound track, visual indication of the amount of recording thereon is effected by coating the recording medium with a blushed pressure-sensitive material which is impressed by a stylus carried by the transducer. Specification 670,246 is referred to.
GB8687/50A1949-04-081950-04-06Improvements in or relating to recording
ExpiredGB684628A
(en)