4. Heat exchange
  5. Regenerator
  6. Heat collector

Douglas L. Wathen

Attorney

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Actuators and moveable elements with position sensing

Electricity: measuring and testing – Magnetic – Displacement
Reexamination Certificate

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Arrowhead having collapsible and outwardly biased blades

Games using tangible projectile – Projectile – per se; part thereof or accessory therefor – Arrow – dart – or shuttlecock; part thereof
Reexamination Certificate

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Autogenously welded metallic cellular structures and methods...

Stock material or miscellaneous articles – All metal or with adjacent metals – Honeycomb – or with grain orientation or elongated elements...
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Biometric control of equipment

Electrical computers and digital processing systems: support – System access control based on user identification by... – Using record or token
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Chair

Design Patent

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Profile ID: LFUS-PAI-P-2179160

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