Cadet Kelly failed to be released.
Tetrode can refer to  :. Tetrode. Tetrode. Tetrode , an electronic device with four active electrodes , such as a vacuum tube. Tetrode. Tetrode. Beam tetrode. Beam tetrode. Beam tetrode. Field effect tetrode , a solid-state device. Field effect tetrode. Field effect tetrode. Tetrode -LRB- biology -RRB- , an electrode used in biology to sample neural signals. Tetrode. Tetrode. Tetrode transistor , a transistor with four active terminals. Tetrode. Tetrode. Tetrode transistor. Tetrode transistor. Sackur -- Tetrode equation , an expression for the entropy of a monatomic classical ideal gas. Tetrode. Tetrode. Hugo Tetrode , a Dutch physicist -LRB- 1895 - 1931 -RRB-. Tetrode. Tetrode. Hugo Tetrode. Hugo Tetrode. Willem Danielsz van Tetrode , a Dutch sculptor -LRB- ca. 1530 - ca. 1587 -RRB-. Tetrode. Tetrode. Willem Danielsz van Tetrode. Willem Danielsz van Tetrode