In 1961 the company's founder and owner, Maurice Fenzy, invented a divers' adjustable buoyancy life jacket (ABLJ) (European terminology) or buoyancy compensator (BC) (North American terminology) that became so well known that the company name has become synonymous with the item, although Fenzy also manufactured rebreathers and other items. See Buoyancy compensator (diving)#History.
- "McLean, David: History of Buoyancy Compensators: Slide #21" (PDF). Archived from the original (PDF) on 2012-06-26.
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- Patent for an industrial rebreather designed in 1920
- Fenzy Escape
- Fenzy ORM 55
- Fenzy 55
- Fenzy 67 J
- Fenzy PO68