4. Telephonic communications
  5. Multi-line or key substation system with selective switching...
  6. With intercom system

Douglas A. Cross

Inventor

Rate now
  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Inventor

active

Flexible data transfer to and from external device of...

Electrical computers and digital data processing systems: input/ – Intrasystem connection – Bus interface architecture
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Microprocessor controlled telephone unit

Telephonic communications – Multi-line or key substation system with selective switching... – With intercom system
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Telephone line selector for use with a PBX

Telephonic communications – Special services – Call diversion
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Douglas A. Cross does not yet have a rating. At this time, there are no reviews or comments for this inventor.

If you have personal experience with Douglas A. Cross, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Douglas A. Cross will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-P-679705

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.

Canada

 Charities
 Companies
 MP Candidates
 Patents
 Employee Salary Disclosure

World

 Places of the World
 Scientific Papers

United States

 Banks
 Companies
 Counties
 Patents
 Employee Salary Disclosure