Number | Name | Date | Kind |
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2671741 | Duvall | Mar 1954 | |
3302655 | Sasaki et al. | Feb 1967 | |
3451401 | Levinson | Jun 1969 | |
3887392 | Tang | Jun 1975 | |
3990906 | Johnston et al. | Nov 1976 | |
4247508 | Housholder | Jan 1981 | |
4504322 | Adwalpalker et al. | Mar 1985 | |
4561902 | Lee | Dec 1985 | |
4575330 | Hull | Mar 1986 | |
4665492 | Masters | May 1987 | |
4791022 | Graham | Dec 1988 | |
4818562 | Arcella et al. | Apr 1989 | |
4863538 | Deckard | Sep 1989 | |
4929402 | Hull | May 1990 | |
5121329 | Crump | Jun 1992 | |
5147587 | Marcus et al. | Sep 1992 |
Number | Date | Country |
---|---|---|
WO9003893 | Apr 1990 | WOX |
Entry |
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Wohlers, Terry, "Creating Parts by the Layers", Cadence, Apr., 1989, pp. 73-76. |