Number | Name | Date | Kind |
---|---|---|---|
5237386 | Harley | Aug 1993 | |
5506679 | Cooper et al. | Apr 1996 | |
5589935 | Biard | Dec 1996 |
Number | Date | Country |
---|---|---|
0141039 | Aug 1984 | JPX |
Entry |
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Hinterberger & Winston, "Use of a Solid Light Funnel to Increase Phototube Aperture . . . " Rev. of Scientific Inst. vol. 39 No. 8 p. 1717, Aug. 1968. |