Buoyancy system for application to submersible bodies
Patent 6131531 Issued on October 17, 2000. Estimated Expiration Date: 
September 22, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 22, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesVariable buoyancy device Variable volume depth control Passive controlled buoyancy apparatus Variable buoyancy apparatus Patent #: 4677931 InventorsApplicationNo. 158810 filed on 09/22/1998US Classes:114/331Depth controlExaminersPrimary: Avila, StephenAttorney, Agent or FirmInternational ClassB63G 008/14AbstractThe present invention generally relates to apparatus and methods for buoyancy compensation. More particularly, the present invention is directed to a selectively deformable buoyancy device and method for its use. | |
