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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