Company Filing History:
2 out of 3 
1 out of 84 
1 out of 1 Years Active: 1988-1992
Title: Innovations of James R. Hendershot
Introduction
James R. Hendershot is a notable inventor based in Arroyo Grande, California. He holds a total of 4 patents that showcase his contributions to the fields of communication and antenna technology. His innovative designs have significantly impacted the efficiency and reliability of communication systems.
Latest Patents
One of Hendershot's latest patents is a multiband antenna. This antenna is designed to receive signals in the AM/FM bands while also transmitting signals in higher frequency bands, such as those used for cellular telephones. The design features a tubular rod for the AM/FM band and a center-fed coaxial dipole for the higher frequency band. A cylindrical choke is strategically placed to minimize coupling between the two antennas, ensuring optimal performance and radiation patterns.
Another significant patent is the call box communication system. This system employs a virtual hold technique that enhances efficiency by releasing communication channels when a field unit is on hold. Additionally, it incorporates a self-testing technique that allows for automated testing of the communication loop without human intervention. This innovation improves the reliability of the system, making it more effective in various applications.
Career Highlights
Throughout his career, Hendershot has worked with several companies, including Signal Communications Limited and Radio Frequency Systems, Inc. His experience in these organizations has contributed to his expertise in developing advanced communication technologies.
Collaborations
Hendershot has collaborated with notable individuals in the field, including George D. Yarsunas and Michael Leonard Brennan. These collaborations have further enriched his work and innovations.
Conclusion
James R. Hendershot's contributions to antenna technology and communication systems demonstrate his innovative spirit and technical expertise. His patents reflect a commitment to enhancing communication efficiency and reliability.