John D Gillen

Title: John D Gillen: Innovator in Telephone Technology

Introduction

John D Gillen is a notable inventor based in Kirkland, WA (US). He has made significant contributions to the field of telecommunications, particularly in the development of innovative circuits for telephone systems. With a total of 2 patents to his name, Gillen's work has had a lasting impact on communication technology.

Latest Patents

Gillen's latest patents include the "Line Hold Circuits" and the "Multi-Link Telephone Intercom System." The Line Hold Circuits patent describes a single line hold circuit designed for connection between the tip and ring leads of a telephone line. This circuit features impedance means that include a semiconductor element with high and low impedance states. The low impedance state is crucial for maintaining the telephone line in a hold condition. Additionally, the circuit incorporates means to ensure the semiconductor remains in its low impedance state after a predetermined interruption in loop current. The Multi-Link Telephone Intercom System patent outlines a system that supports up to four communication links, each with a separate link selector and scanner for each telephone station. This system is compatible with conventional dial pulse or tone-selective key telephone sets.

Career Highlights

Gillen is associated with Tone Commander Systems, Inc., where he has been instrumental in advancing telephone technology. His work has contributed to the development of systems that enhance communication efficiency and reliability.

Collaborations

Gillen has collaborated with notable coworkers such as Maurice I Smith and Gerald L Edwards, who have also contributed to advancements in telecommunications.

Conclusion

John D Gillen's innovative patents and contributions to telephone technology highlight his role as a significant inventor in the field. His work continues to influence modern communication systems, showcasing the importance of innovation in technology.