Company Filing History:
1 out of 10 
1 out of 832,812 Years Active: 1976-1977
Title: Innovations by John M Ruddy
Introduction
John M Ruddy is an accomplished inventor based in Sudbury, MA (US). He holds two patents that showcase his innovative contributions to technology, particularly in the realm of communication systems utilizing power line carrier signals.
Latest Patents
One of his notable patents is for a system that enables remote signaling to a telephone line utilizing power line carrier technology. This invention allows a remote transmitting or receiving device to communicate with a conventional subscriber telephone through available AC power wires. The system detects incoming telephone calls and modulates a master RF carrier frequency, which is coupled to the AC power wires. This enables control of electrical appliances or devices at remote locations based on telephone signals.
Another significant patent by Ruddy is for a telephone extension system that also utilizes power line carrier signals. This system allows an extension telephone to communicate with a conventional subscriber telephone line through AC power wires. Incoming signals are detected and modulated, allowing for seamless communication between the main telephone and extension telephones, regardless of their location as long as they share the same AC power infrastructure.
Career Highlights
Throughout his career, John M Ruddy has worked with various companies, including Astech, Inc. His work has significantly impacted the field of telecommunications, particularly in enhancing the functionality of telephone systems through innovative use of existing power line infrastructure.
Collaborations
Ruddy has collaborated with notable individuals in his field, including Robert T Dunn and William M Brown. Their collective expertise has contributed to the development of advanced communication technologies.
Conclusion
John M Ruddy's contributions to the field of telecommunications through his innovative patents demonstrate his commitment to enhancing communication systems. His work continues to influence the way we utilize existing technologies for improved connectivity.