ALEXANDRIA, Va., Dec. 15 -- Arable Labs, Princeton, New Jersey, has been assigned a patent (9,841,533) developed by three co-inventors for a "disdrometer having acoustic transducer and methods thereof." The co-inventors are Lawrence Adam Wolf, Princeton, New Jersey, Benjamin Joseph Siegfried, Oakland, California, and Adam Lee Smith, Seattle, Washington. The abstract states: "An acoustic disdrometer is provided for measuring precipitation. The acoustic disdrometer has an acoustic transducer posit . . .