4197787 - Pump piston with flexible member
4198362 - Method and apparatus for molding and replicating minute surface characteristics
4202047 - Acoustic jammer and torpedo decoy
4204816 - Discharge and pressure relief ports for mechanisms with involute shaped vanes
4207626 - Acoustic decoy and jammer
4215571 - Expendable bathythermograph for use under ice
4215645 - Shock crush sub-foundation
4217618 - Thyristor firing circuit module with integral optical isolation, dv/dt limitation, and bidirectional voltage transient suppression
4227479 - Submarine communications system
4227677 - Anti-sway device for hoists and cranes
4228753 - Fluidic controlled diffusers for turbopumps
4236867 - Friction reducing arrangement for hydraulic machines
4240676 - Bending pad thrust bearing
4245467 - Isolated reverse turbine system for gas turbine engines
4253408 - Method of protecting incinerator surfaces
4254727 - Shock-crush subfoundation
4254842- Interplaner hinge joint for ses seals
4260587 - Pressure compensated potable water chlorinator
4270479 - Torpedo guards
4282126 - Polyisobutylene rubber antifouling paint
4283461 - Piezoelectric polymer antifouling coating
4284918 - Porous interface stabilized metal current collector
4285414 - Supported membrane planer for SES seals
