Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5279012 | Self-propelled steerable apparatus for removing material from surface of confined area | — | 1994-01-18 |
| 5093949 | Apparatus for cleaning liquid storage tank | — | 1992-03-10 |
| 5083386 | Apparatus and method for forming a crater in material beneath a body of water | — | 1992-01-28 |
| 5037486 | Apparatus and method for cleaning liquid storage tank | — | 1991-08-06 |
| 5021156 | Dump truck for receiving draining and disposing of dredged material | — | 1991-06-04 |
| 4979322 | Apparatus and method for forming a crater in material beneath a body of water | — | 1990-12-25 |
| 4975205 | Apparatus and method for receiving, draining and disposing of dredged material | — | 1990-12-04 |
| 4854058 | Dredging apparatus having a diver-operated hand-held dredge head for quasi-closed loop system | Owen K. Sloan | 1989-08-08 |
| 4807373 | Loop circuit dredging apparatus | Owen K. Sloan | 1989-02-28 |
| 4793386 | Apparatus and method using portable pump | — | 1988-12-27 |
| 4606704 | Well point system and apparatus | — | 1986-08-19 |
| D283424 | Well point system tank | — | 1986-04-15 |
| 4583035 | Apparatus for monitoring and charging electric storage battery | — | 1986-04-15 |
| 4574501 | In-place underwater dredging apparatus of the crater sink type | — | 1986-03-11 |
| 4529359 | Sewerage pumping means for lift station | — | 1985-07-16 |
| 4515517 | Well point system and apparatus | — | 1985-05-07 |
| 4502090 | Protective control system for engine | — | 1985-02-26 |
| 4390305 | Portable hot water system for diver's suit | — | 1983-06-28 |
| 4373860 | Submersible hydraulic pump of the axially directed inlet and tangential outlet type | — | 1983-02-15 |
| 4352251 | Hand operated suction dredge head and hydraulic submersible pump assembly | — | 1982-10-05 |
| 4268787 | Electronic control for switching variable speed/variable voltage electric generator | — | 1981-05-19 |
| 4261601 | Jetting adapter for well point pumping apparatus | — | 1981-04-14 |
| 4249865 | Control means for preventing water overflow into vacuum type priming pump | — | 1981-02-10 |
| 4207921 | Header assembly and jetting adapter for well point pumping apparatus | — | 1980-06-17 |
| 4190400 | Integral pump and drive shaft assembly | — | 1980-02-26 |