Mark, Andrew R. Trademarks
TELEKEY
Filed: August 30, 1993
programmable telecommunications devices and support
Owned by: Mark, Andrew R.
Serial Number: 74430134
SMART KEY
Filed: September 22, 1993
microprocessor based devices for encrypting and/or encoding voice and data files
Owned by: Mark, Andrew R.
Serial Number: 74438997
VERSITONE
pair or pairs of signaling tones, each with identical frequencies, which are level-adjusted to compensate for variances…
Owned by: Mark, Andrew R.
Serial Number: 76054318
