1. Nedelcu Dumitru, Brevet RO 116923 B, (1997), Machine tool high capacity pneumo hydraulic force amplifier has three successive acting pistons controlled by compressed air (ISI indexing, International Patent Clasification F15B-003/00, Class code Q7).

2. Nedelcu Dumitru, Brevet RO 117212 B, (1997), Lathe facility controlling channeling consists of a traversing carriage integral with a holder of balls entering the channels, and a comparator (ISI indexing, International Patent Clasification G01B-005/16, Class code S02).

3. Nedelcu Dumitru, Cobzaru, P., Scurtu P.R., Chelariu, R.,(2017), Die for producing samples made of metal matrix composite material by liquid forging, patent RO126022 (ISI indexing, International Patent Classification B22D-011/041; B22D-011/06).

4. Nedelcu Dumitru, Carcea I., Popa I, Roman C, Sava O.,(2012),Equipment for the manufacture of particle-reinforced composite materials, comprises a crucible provided with some heating resistors and a paddle for mixing molten material, crucible being carried by a support, patent RO126020 (ISI indexing, International Patent Classification B21J-009/06; B23P-015/24).

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