4. Telephonic communications
  5. Supervisory or control line signaling
  6. Signal receiver

Philip Ching

Inventor

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

Details

Inventor

active

Analog PLL with switched capacitor resampling filter

Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Reexamination Certificate

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Method and apparatus for detecting dual tone alerting signal...

Telephonic communications – Supervisory or control line signaling – Signal receiver
Reexamination Certificate

  [ 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

Philip Ching does not yet have a rating. At this time, there are no reviews or comments for this inventor.

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

Rate now

     

Profile ID: LFUS-PAI-P-2794960

  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