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Patent applications and USPTO patent grants for Van der AA; Herman Henricus Maria.The latest application filed is for "heating system".
Patent | Date |
---|---|
Heating system Grant 4,084,376 - Asselman , et al. April 18, 1 | 1978-04-18 |
Heating System Grant 3,817,322 - Asselman , et al. June 18, 1 | 1974-06-18 |
Device Comprising A Liquid-supported Rolling Diaphragm Seal Grant 3,774,506 - Van Der Aa November 27, 1 | 1973-11-27 |
Device With Rolling Diaphragm Seal Separating Gas And Liquid Grant 3,748,970 - Van Der AA July 31, 1 | 1973-07-31 |
Hot-gas Machine Comprising A Heat Transfer Device Grant 3,702,533 - Dirne , et al. November 14, 1 | 1972-11-14 |
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