USD453740SExpiredUtility

Pressure-wave switch

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Assignee: BIRCHER AGPriority: Oct 27, 1999Filed: Apr 26, 2000Granted: Feb 19, 2002
Est. expiryOct 27, 2019(expired)· nominal 20-yr term from priority
Inventors:Christof LexerGodert De Jager
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1
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4
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1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a pressure-wave switch, as shown and described.

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