4. A - Human Necessities
  5. 62
  6. C

Shawn J. Feenstra

A - Human Necessities – 62 – C

Inventor

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Country: United States Of America

Check valve with an improved clapper and valve seat

F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent

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Dry sprinkler assembly

A - Human Necessities – 62 – C
Patent

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Fire protection sprinkler

A - Human Necessities – 62 – C
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Pre-primed preaction sprinkler system

A - Human Necessities – 62 – C
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Profile ID: LFCA-PAI-P-1436528

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