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| | Cinder block modular diffusor - Patent 4964486 |
 | | 2-5, the block 15 is shown in detail to include a plurality of wells 25, 27, 29, 31, 33 and 35 having differing depths with respect to one another as determined through implementation of the quadratic-residue number theory sequence. |
 | | 1, it should be understood that for structural integrity, the blocks 21, 11, 13, and 23 are assembled on the blocks 15, 17, and 19 in a staggered overlapping relation through the use of mortar designated generally by the reference numeral 3. |
 | | Thus, while the blocks 15, 17 and 19 each include a single well defined sequence of wells determined in accordance with the quadratic-residue number theory sequence, the blocks 21, 11, 13 and 23 only include portions of these sequences of wells and must be assembled together to provide complete such sequences. |
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