Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6746201 | Bundle puller with adjustable length carriage frame | John M. Dewees, James E. Edward | 2004-06-08 |
| 5862819 | Mobile apparatus for removing hazardous gases from enclosed structures | — | 1999-01-26 |
| 5634962 | Method for removing hazardous gases from enclosed structures | Timothy W. Trahan, Nishanath K. Mehta | 1997-06-03 |
| 5485966 | Remotely controlled chopping machine for tank cleaning | — | 1996-01-23 |
| 5460331 | Apparatus for dispersion of sludge in a crude oil storage tank | Richard W. Krajicek | 1995-10-24 |
| 5403145 | Street legal, mobile, truck mounted tube bundle pulling apparatus | Richard W. Krajicek | 1995-04-04 |
| 5261600 | Vertical tube bundle cleaner | — | 1993-11-16 |
| 5091016 | Method for dispersing sediment contained in a storage tank | Richard W. Krajicek | 1992-02-25 |
| 5032054 | Aerial bundle puller | Richard W. Krajicek | 1991-07-16 |
| 4945933 | Liquid circulator useful for dispersing sediment contained in a storage tank | Richard W. Krajicek | 1990-08-07 |
| 4869638 | Aerial bundle puller | Richard W. Krajicek | 1989-09-26 |
| 4856545 | Multi-lange tube bundle cleaner | Richard W. Krajicek | 1989-08-15 |
| 4817653 | Tank cleaning, water washing robot | Richard W. Krajicek | 1989-04-04 |
| 4805653 | Mobile articulatable tube bundle cleaner | Richard W. Krajicek | 1989-02-21 |
| 4666365 | Tube bundle pulling apparatus | — | 1987-05-19 |
| 4575305 | Truck mounted tube bundle pulling apparatus | Richard W. Krajicek, Steven W. Krajicek | 1986-03-11 |