What does SPTA stand for?
SPTA stands for "sound powered telephone amplifier"
How to abbreviate "sound powered telephone amplifier"?
"sound powered telephone amplifier" can be abbreviated as SPTA
What is the meaning of SPTA abbreviation?
The meaning of SPTA abbreviation is "sound powered telephone amplifier"
What does SPTA mean?
SPTA as abbreviation means "sound powered telephone amplifier"
