4. F - Mech Eng,Light,Heat,Weapons
  5. 21
  6. K

John W. Shaffer

F - Mech Eng,Light,Heat,Weapons – 21 – K

Inventor

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Inventor

Amalgam retainer

H - Electricity – 01 – J
Patent

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Cathode coating for thermionic arc discharge lamp cathodes

C - Chemistry – Metallurgy – 25 – B
Patent

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Circuit breaker by-pass element

H - Electricity – 01 – J
Patent

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Die-stamped circuit board assembly for photoflash devices...

B - Operations – Transporting – 23 – B
Patent

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Die-stamped circuit board assembly having relief means and...

H - Electricity – 01 – H
Patent

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Getter for incandescent lamps

H - Electricity – 01 – J
Patent

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Incandescent lamps including a combined getter

H - Electricity – 01 – K
Patent

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Profile ID: LFCA-PAI-P-9239

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