Inventor · disambiguated record

Gerardus J. A. Hellings

Also filed as: HELLINGS GERARDUS J · HELLINGS GERARDUS J A

3 granted patents·16 citations·filing 1989–1992

65Inventor score

Technology areasH01J

Files withPHILIPS CORP3

Top patents by PatentIndex Score

3 records

0151US4945283ACathode ray tube having a tubular focus structurePHILIPS CORP·Filed 1989·Granted Jul 31, 1990·8 cites·12 claims
0246US4961022ADisplay tube including a helical focusing lens with a non-rotationally symmetrical lens elementPHILIPS CORP·Filed 1989·Granted Oct 2, 1990·6 cites·8 claims
0329US5256934ADisplay tube comprising an electron gun with a resistive focusing lensPHILIPS CORP·Filed 1992·Granted Oct 26, 1993·2 cites·27 claims

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