Patents

Product

Patent No.

PENTODE

US Pat. 9,251,119

US Pat. 9,356,777

US Pat. 9,730,059

US Pat. 10,306,466

US Pat. 10,939,292

TETRODE

US Pat. 9,251,119

US Pat. 9,356,777

US Pat. 9,730,059

US Pat. 10,306,466

(Note: Other patents pending.)

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