Company Filing History:
Years Active: 1998
Title: Innovations by Andrew J Marsh
Introduction
Andrew J Marsh is an accomplished inventor based in Garland, Texas. He has made significant contributions to the field of telecommunications through his innovative designs and patents. His work primarily focuses on subscriber line circuits, which are essential for modern communication systems.
Latest Patents
Andrew J Marsh holds a patent for a "Subscriber line interface and power circuit." This invention implements all of the BORSCHT functions without relying on an external ringing generator to provide the necessary ringing voltage. The design recognizes that supervisory and ringing signals occur in a sequence, allowing for a more efficient circuit that generates each supervisory signal, such as -48 volts and -24 volts, and alerting signals like the ringing signal as required.
Career Highlights
Marsh has had a notable career at Lucent Technologies Inc., where he has been instrumental in developing advanced telecommunications technologies. His expertise in subscriber line circuits has positioned him as a key figure in the industry.
Collaborations
Throughout his career, Andrew has collaborated with talented individuals such as Robert K Chen and Paul W Frazier. These partnerships have contributed to the successful development of innovative technologies in telecommunications.
Conclusion
Andrew J Marsh's contributions to the field of telecommunications through his patent and work at Lucent Technologies Inc. highlight his role as a significant inventor. His innovative designs continue to impact the industry positively.