JD

John M. Dahlen

📍 Duxbury, MA: #60 of 188 inventorsTop 35%
🗺 Massachusetts: #23,459 of 88,656 inventorsTop 30%
Overall (All Time): #1,047,459 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
D449163 Suitcase Jappe Nielsen 2001-10-16
4972593 Method and apparatus for measuring the undistorted magnetic field of the earth James R. Scholten, John T. Shillingford, Jr. 1990-11-27
4202034 Adaptive controller for ocean characteristic measurement system Philip N. Bowditch, John F. McKenna, John T. Shillingford, Jr., Frank J. Siraco, William E. Toth 1980-05-06
4202036 Buoyancy control for ocean characteristic measurement system Philip N. Bowditch, John F. McKenna, John T. Shillingford, Jr., Frank J. Siraco, William E. Toth 1980-05-06
4191049 System for measuring ocean current Philip N. Bowditch, John F. McKenna, John T. Shillingford, Jr., Frank J. Siraco, William E. Toth 1980-03-04