Patent applications and correspondence, 1953-1987

The series consists of materials related to oceanographic instruments designed and patented by Warren Witzell and Sydney Knott. Materials include photographs, instructions, memoranda, patents, correspondence and articles relating to seven instruments: waterproof and pressureproof cable plugs and connections, the multiple electrode spark source, lightweight towed transducer housing, sweep synchronized positionable trigger, continuous magnetic line hydrophone, in-line cable connector for well-logging cable and the Arctic Remote Autonomous Measurement Platform (ARAMP).

Also included in the series are four photographs of the In-line cable connector for well-logging cable, and photographic slides of Vice President Hubert Humphrey's visit to WHOI in 1967 and of DSV Alvin from 1964.