Telecommunications. pulse-time modulation.
PTMPTY per thousand members per year
abbreviation 1. public telephone network: the telephone network provided in Britain by British Telecom Physical Transport Network
1. Patent and Trademark Office. 2. Machinery. power takeoff. 1. please turn over (a page or leaf). abbreviation 1. please turn over PTO 1. Parent-Teacher Organization 2. Patent and Trademark Office 3. power takeoff p.t.o. please turn over
1. please turn over (a page or leaf). p.t.o. please turn over