This is a division of U.S. patent application Ser. No. 07/476,813, filed Feb. 8, 1990, now U.S. Pat. No. 5,110,288.
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3142480 | Azbe | Jul 1964 | |
3356351 | Roberts et al. | Dec 1967 | |
3686034 | Rothschild | Aug 1972 | |
3822657 | Midkiff | Jul 1974 | |
3955915 | Buchner | May 1976 | |
4308806 | Uemura et al. | Jan 1982 | |
4334859 | Minegishi et al. | Jun 1982 | |
4598670 | Clamser et al. | Jul 1986 | |
4664623 | Sundermann et al. | May 1987 | |
4693682 | Lee et al. | Sep 1987 | |
4762073 | Giaier et al. | Aug 1988 |
Entry |
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"A Practical Guide to Selecting a Sand Reclamation System", Foundry, Mar., 1973, by John J. Rothschild. |
"Sand Reclamation Can Be An Economical Answer to Solid Waste Disposal" Foundry, Apr., 1989, vol. 117, No. 4. |
Brochure "Coreco" World Class Sand Reclaimers, 4 pages. |
"Quipclaim" Thermal Sand Reclamation Brochure, Quiptec Inc., 4 pages. |
GMD Engineered Systems, Inc. Brochure "Thermo-Scrubber" Sand Reclaimer 2 pages. |
Advanced Sandsource Thermal Reclamation System, "CE CAST", Combustion Engineering, Inc. Brochure, 4 pages. |
Number | Date | Country | |
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Parent | 476813 | Feb 1990 |