|
Acousticon Model A-45 Vacuum Tube
Hearing Aid (1940) (B1073-114 (a), B1073-113
(b)) |
|
|
Acousticon Model A-55
(Symphonic) Vacuum Tube
Hearing Aid (1942) (H112, H116, H117, B3, B7) |
|
|
Acousticon Model A-90
"Imperial" (2-piece) Vacuum Tube
Hearing Aid (1947) (H109) |
|
|
Acousticon Model A-90
"Imperial" (1-piece) Vacuum Tube
Hearing Aid (1947) (B543) |
|
|
Acousticon Model A-90M
(Imperial) Vacuum Tube
Hearing Aid (1948) (H161, B4) |
|
|
Acousticon Model A-100
(Imperial) Vacuum Tube
Hearing Aid (1947) (H162) |
|
|
Acousticon Model A-120
(Constellation) Vacuum Tube
Hearing Aid (1948) (H164, H165, B672a, B672b) |
|
|
Acousticon Model A-120B Vacuum Tube
Hearing Aid (1948) (B413) |
|
|
Acousticon Model A-130
"Constellation" Vacuum Tube
Hearing Aid (1948) (B326-807 a & b) |
|
|
Acousticon Model A-140
"Constellation" Vacuum Tube
Hearing Aid (1948) (B817) |
|
|
Acousticon Model A-145 (Super-X-Ear) Vacuum Tube
Hearing Aid (1948) (H163) |
|
|
Acousticon Model A-15 Vacuum Tube
Hearing Aid (1948) (B278) |
|
|
Acousticon Model A-150
(International) Vacuum Tube
Hearing Aid (1949) (H110, B5) |
|
|
Acousticon Model A-160
(International) Vacuum Tube
Hearing Aid (1949) (H166, B1030) |
|
|
Acousticon Model A-17 Vacuum Tube Hearing Aid
(1950) (B1079-167) |
|
|
Acousticon Model A-151 Vacuum Tube Hearing Aid
(1950) (B664) |
|
|
Acousticon Model A-152 Vacuum Tube Hearing Aid
(1950) (H111, B291) |
|
|
Acousticon Model A-165 Vacuum Tube
(Wrist-worn) Hearing Aid
(1950) (H168, B6) |
|
|
Acousticon Model A-165
Mod. Vacuum Tube
(Wrist-worn) Hearing Aid
(1950) (B329) |
|
|
Acousticon Model A-69.50 Vacuum Tube Hearing Aid
(1950) (H169) |
|
|
Acousticon Model A-200 Vacuum Tube (Barrette) Hearing Aid
(1951) (B802a, B802b) |
|
|
Acousticon Model A-180 "Golden Jubilee" Vacuum Tube Hearing Aid
(1952) (B319-170) |
|
|
Acousticon Model A-180 [Mod]"Golden Jubilee" Vacuum Tube Hearing Aid
(1952) ( B328) |
|
|
Acousticon Model A-185 Vacuum Tube Hearing Aid
(1952) (B1077-171) |
|