Company Filing History:
2 out of 108 
1 out of 20 Years Active: 1981-1985
Title: Innovations of John D. Sublette
Introduction
John D. Sublette is a notable inventor based in Huntsville, Alabama. He has made significant contributions to the field of telecommunications, holding a total of 3 patents. His work primarily focuses on enhancing telephone technology, showcasing his innovative spirit and technical expertise.
Latest Patents
One of his latest inventions is the "Current Regulated Pulse Dialer with Memory Retention Circuit." This device includes a memory for storing predetermined sequences of telephone numbers, designed for use in loop-powered pulse dialing telephones. The circuit features a first current source that provides high impedance across the telephone line during transmission and interpulse pause conditions. Additionally, a second current source is connected to maintain the integrity of the information stored in the memory portion of the dialer circuitry.
Another significant patent is the "Electronic Tone Ringer." This invention is designed for use in telephone substations and operates in response to conventional ringing signals. It generates a single tone alert signal that is interrupted at a low frequency. The audible tone alert signal is produced by a piezo-ceramic transducer, enhancing the functionality of traditional telephone systems.
Career Highlights
Throughout his career, John D. Sublette has worked with prominent companies such as GTE Automatic Electric Labs Inc. and GTE Business Communication Systems Inc. His experience in these organizations has allowed him to develop and refine his innovative ideas in telecommunications.
Collaborations
John has collaborated with various professionals in his field, including his coworker William Stobbs. Their joint efforts have contributed to the advancement of technology in telecommunications.
Conclusion
John D. Sublette's contributions to the field of telecommunications through his patents and career achievements highlight his role as an influential inventor. His innovative designs continue to impact the industry, showcasing the importance of creativity and technical skill in advancing technology.