1922 Fada
Pacent model number 30
Remler model 50
R-W
R-W
British made
Crosley
DeForest
DeForest on crystal set
Unknown
Unknown
DeForest (reproduction)
Hulet
Unknown
French made
Philmore
Philmore
Lapp-Eastman
W&M Company
Semi - adjustable
Elkay
Unknown
Unknown
Greenwold
Philmore
Philmore
Fixed (non adjustable)
ERLA
Foote
Philmore