4. Apparel
  5. Guard or protector
  6. For wearer's head

William D. Siska, Jr.

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Gas shutoff valve having a positive open indicator

Fluid handling – With indicator – register – recorder – alarm or inspection means – Position or extent of motion indicator
Reexamination Certificate

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Helmet with an alarm

Apparel – Guard or protector – For wearer's head
Patent

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Series/parallel relief valve for use with aircraft gaseous...

Fluid handling – Plural tanks or compartments with parallel flow – With manifold or grouped outlets
Reexamination Certificate

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Weather resistant sound attenuating modular communications...

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Plural or compound reproducers
Reexamination Certificate

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Profile ID: LFUS-PAI-P-362634

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