Company Filing History:
4 out of 1,258 
1 out of 832,812 Years Active: 1987-1995
Title: Guilford R MacPhail: Innovator in Amplifier Technology
Introduction
Guilford R MacPhail is a notable inventor based in Williamsport, PA (US). He has made significant contributions to the field of amplifier technology, holding a total of 5 patents. His innovative designs have advanced the functionality and efficiency of crossed-field amplifiers.
Latest Patents
One of his latest patents is the "Internally cooled forward wave crossed field amplifier anode vane." This invention provides a double helix coupled vane forward wave crossed-field amplifier that utilizes individually cooled vanes in the RF slow-wave circuit. The design features a channel shaped like a 'U' on one side of the vane, with a corresponding U-shaped vane coolant tube that is brazed to the machined vane. This assembly is attached to the anode body, allowing for effective cooling of the individual vanes.
Another significant patent is the "Enhanced secondary electron emitter." This invention discloses a cathode suitable for use in typical crossed-field amplifiers. The cathode's emitter surfaces are formed into protuberances or knurls, which enhance its secondary emission characteristics. The increased surface area allows for more efficient electron bombardment and emission, improving the overall performance of the cathode.
Career Highlights
Throughout his career, Guilford R MacPhail has worked with various companies, including Litton Systems, Inc. His work has focused on developing advanced technologies that improve the efficiency and effectiveness of electronic devices.
Collaborations
Guilford has collaborated with notable coworkers such as Chris L Wheeland and John C Cipolla. Their combined expertise has contributed to the successful development of innovative technologies in the field.
Conclusion
Guilford R MacPhail's contributions to amplifier technology through his patents and collaborations highlight his role as a significant innovator in the industry. His work continues to influence advancements in electronic devices and systems.