.
Philips
EC91 - Grounded Grid Triode
page 1 2 3 EC91 sheet 1 2 FP date 1950.03.03 1950.03.03 1999.06.20 .
Philips
EC91 - S.Q. Tube
page 1 2 3 4 5 EC91 sheet 1 2 3 4 FP date 1968.12 1968.12 1968.12 1968.12 2001.04.13 .
Mallory
CEC910J - Disc Ceramic Capacitors
EIA Class 1 Temperature Compensating Disc Ceramic Capacitors { { { { Temperature Compensating Ideal For Use in Timing and Oscillating Circuits Conform.
