Company Filing History:
1 out of 11 
1 out of 832,843 Years Active: 1988-1992
Title: The Innovations of Charles E. Murphy
Introduction
Charles E. Murphy is an accomplished inventor based in Sarasota, FL, known for his contributions to telecommunications technology. With a total of two patents to his name, Murphy has made significant advancements in the field, particularly in the design and functionality of pay telephones and voice recording apparatus.
Latest Patents
Murphy's latest patents include a line-powered pay telephone with power management. This innovative design allows the telephone to operate solely on loop current available from the central office, eliminating the need for an external power source. The system incorporates a rechargeable battery that stores excess loop current, ensuring the pay telephone remains operational even when not off-hook. Additionally, the design minimizes power consumption by selectively shutting down unnecessary functions, thereby preserving sufficient loop current for battery recharging. Another notable patent is his voice recording apparatus, which features full duplex communication between the operator's telephone set and the PBX switching matrix. This technology allows for digital signal recording, enabling the operator to present either their actual voice or a recorded message to the PBX based on their selection.
Career Highlights
Throughout his career, Charles E. Murphy has worked with various companies, including Elcotel, Inc. His work has focused on enhancing communication technologies, making significant contributions that have improved the efficiency and functionality of telecommunication devices.
Collaborations
Murphy has collaborated with notable individuals such as Eugene D. Kelley and Piera G. Kelley, further enriching his professional experience and expanding his innovative reach.
Conclusion
Charles E. Murphy's contributions to the field of telecommunications through his patents and career achievements highlight his role as a significant inventor. His innovative designs continue to influence the industry, showcasing the importance of creativity and technical expertise in advancing technology.