Invention Grant
- Patent Title: Translation device for phonographs
- Patent Title (中): 留声机翻译装置
-
Application No.: US26322939Application Date: 1939-03-21
-
Publication No.: US2238863APublication Date: 1941-04-15
- Inventor: NORTON LELAND D
- Applicant: DICTAPHONE CORP
- Assignee: Dictaphone Corp
- Current Assignee: Dictaphone Corp
- Priority: US26322939 1939-03-21
- Main IPC: H04R1/16
- IPC: H04R1/16 ; H04R11/08
Information query
