Tombs, M. (2014). US Patent No. 8,706,430: Compensating for frequency change in flowmeters. United States Patent and Trademark Office.
Παραπομπή σε μορφή Chicago (17η εκδ.)Tombs, M. US Patent No. 8,706,430: Compensating for Frequency Change in Flowmeters. United States Patent and Trademark Office, 2014.
Παραπομπή σε μορφή MLA (9th εκδ.)Tombs, M. US Patent No. 8,706,430: Compensating for Frequency Change in Flowmeters. United States Patent and Trademark Office, 2014.
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