Patents
- U.S. Patent 3,928,967 — 1974 Apparatus and method of extracting wave energy – The original "Salter's Duck" patent
- U.S. Patent 4,134,023 — 1977 Apparatus for use in the extraction of energy from waves on water – Salter's method for improving "duck" efficiency
- U.S. Patent 6,194,815 — 1999 Piezoelectric rotary electrical energy generator
- US application 20,040,217,597 — 2004 Wave energy converters utilizing pressure differences (src)
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