Number | Date | Country | Kind |
---|---|---|---|
3-093212 | Mar 1991 | JPX | |
3-155593 | May 1991 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
1532002 | Thomson | Mar 1925 | |
2890127 | Ford | Jun 1959 | |
3485687 | Chapman et al. | Dec 1969 | |
3717486 | Fukumoto et al. | Feb 1973 | |
3781527 | Tymzcak | Dec 1973 | |
3949030 | Murata | Apr 1976 | |
3950175 | Lachman et al. | Apr 1976 | |
4033780 | Baumgartner et al. | Jul 1977 | |
4035065 | Fletcher et al. | Jul 1977 | |
4118450 | Nakamura et al. | Oct 1978 | |
4331383 | Christiansen | May 1982 | |
4364763 | Rennerfelt | Dec 1982 | |
4422893 | Duchateau et al. | Dec 1983 | |
4451119 | Meyers et al. | May 1984 | |
4466700 | Christiansen et al. | Aug 1984 | |
4670338 | Clemino | Jun 1987 | |
4856887 | Wakugawa et al. | Aug 1989 | |
4875766 | Shimodaira et al. | Oct 1989 | |
5002378 | Colarusso et al. | Mar 1991 | |
5316564 | Nakamura et al. | May 1994 | |
5461511 | Nakamura et al. | Oct 1995 | |
5563743 | Nakamura et al. | Oct 1996 | |
5576884 | Ise et al. | Nov 1996 |
Number | Date | Country |
---|---|---|
352375 | Jul 1931 | GBX |
968025 | Aug 1964 | GBX |
Entry |
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Zito; "A Method of Making Ultralight Primary Mirrors"; SPIE vol. 1494 Space Astronomical Telescopes and Instruments (1991) pp. 491-497. |