4. Signals and indicators
  5. Horns, whistles and compressional wave generators
  6. Diaphragm horns

Walter C. Palm

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Air horn

Signals and indicators – Horns – whistles and compressional wave generators – Diaphragm horns
Patent

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Multi-layer articles and methods of making same

Stock material or miscellaneous articles – All metal or with adjacent metals – Having metal particles
Reexamination Certificate

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Regulator for vehicle leveling systems

Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
Patent

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Single-housing multi-trumpet air horn

Signals and indicators – Horns – whistles and compressional wave generators – Diaphragm horns
Patent

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Profile ID: LFUS-PAI-P-631216

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