The invention described herein was made in the performance of work under a NASA contract and is subject to the provisions of Section 305 of the National Aeronautics and Space Act of 1958, Public Law 85-568 (72 Stat. 435; 42 USC 2457).
Number | Name | Date | Kind |
---|---|---|---|
2550648 | Sweet | Apr 1951 | |
2582073 | Scudda | Jan 1952 | |
2982169 | Enright | May 1961 | |
3339451 | Shaifer | Sep 1967 | |
3449053 | Cannady et al. | Jun 1969 | |
3702734 | Lindahl et al. | Nov 1972 |
Number | Date | Country |
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1243422 | Jun 1961 | DE |
Entry |
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IBM Technical Disclosure Bulletin, vol. 16, No. 1, Jun. 1973, "Surface Contamination Particle Counter", p. 212, (Hopkins et al.). |
IBM Technical Disclosure Bulletin, vol. 12, No. 2, Jul. 1969, "Scanning Registration Densitometer", pp. 276-277, (Abramson). |
The Review of Scientific Instruments, vol. 36, No. 1, Jan. 1965, "Scanning Microscope Densitometer," pp. 31-33, (Hartman). |