Number | Date | Country | Kind |
---|---|---|---|
2437071 | Aug 1974 | DT |
Number | Name | Date | Kind |
---|---|---|---|
1480192 | Worsfold | Jan 1924 | |
2684549 | Olden | Jul 1954 | |
2686380 | Seppala | Aug 1954 | |
2747354 | Bloser | May 1956 | |
3015903 | Wilmingham | Jan 1962 | |
3126865 | Wiegardt, Jr. | Mar 1964 | |
3248812 | Gardner, Jr. | May 1966 | |
3305950 | Hirshman et al. | Feb 1967 | |
3310894 | Ball | Mar 1967 | |
3433531 | Koot et al. | Mar 1969 | |
3438142 | Krutein | Apr 1969 | |
3456371 | Graham et al. | Jul 1969 | |
3480326 | Sheary et al. | Nov 1969 | |
3606954 | Mayer | Sep 1971 | |
3675348 | Dane, Jr. | Jul 1972 |
Entry |
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Clauss, G.; Maritime Rohstoffgewinnung, "Some Investigations into Airlift Systems for Mineral Recovery in Ocean Mining", pp. 315-322. |
Hering, Von Norbert; Stahl U. Eisen 91 (1971), No. 8, 15 Apr.; "Metalle aus Tiefsee-Erzen"; pp. 452-459. |
Page 28 of "World Fishing," Aug. 1967. |
"New Dutch Beam Trawl Stops Flatfish Slaughter," pp. 96 & 99 of World Fishing, June, 1965. |
"New Concept for Lifting Nodules," pp. 37-39 of Ocean Industry Digest, June, 1967. |