G01S15/88- Sonar systems specially adapted for specific applications.G01S15/86- Combinations of sonar systems with lidar systems Combinations of sonar systems with systems not using wave reflection.G01S15/00- Systems using the reflection or reradiation of acoustic waves, e.g.B63C11/48- Means for searching for underwater objects.means for signalling the presence of divers B63C11/00- Equipment for dwelling or working underwater Means for searching for underwater objects.B63C- LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS LIFE-SAVING IN WATER EQUIPMENT FOR DWELLING OR WORKING UNDER WATER MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS.B63- SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT.G01S- RADIO DIRECTION-FINDING RADIO NAVIGATION DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES ANALOGOUS ARRANGEMENTS USING OTHER WAVES.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority claimed from US54357904P external-priority Application filed by Matthew Pope filed Critical Matthew Pope Priority to US11/546,160 priority Critical patent/US7272075B2/en Publication of US20070127316A1 publication Critical patent/US20070127316A1/en Priority to US11/901,496 priority patent/US20080101159A1/en Application granted granted Critical Publication of US7272075B2 publication Critical patent/US7272075B2/en Status Expired - Fee Related legal-status Critical Current Anticipated expiration legal-status Critical Links ( en Inventor Matthew Pope Original Assignee Matthew Pope Priority date (The priority date is an assumption and is not a legal conclusion.

Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Granted Application number US11/546,160 Other versions US7272075B2

Sonar device for testing well drawdown