| 6394411 |
Extractor valve assembly |
Ron T. Hahn |
2002-05-28 |
| 6311718 |
Activator valve for providing a timed vacuum at an output port |
Ron T. Hahn, Enrique P. Loreto |
2001-11-06 |
| D411876 |
Wash basins |
Keith Marshall |
1999-07-06 |
| 5067181 |
Blow out toilet with low water volume usage |
Keith Marshall |
1991-11-26 |
| 4698860 |
Sprayhead with built-in soap system for multi person washfountains |
Ron T. Hahn, Keith Marshall |
1987-10-13 |
| 4682533 |
Vandal resistant and tamper proof pneumatic push button assembly for moving a volume of fluid |
Ron T. Hahn, Keith Marshall |
1987-07-28 |
| 4630638 |
Rotating cap, screen and mounting means for protecting air metering valve |
Ron T. Hahn, Keith Marshall |
1986-12-23 |
| 4630644 |
Dual operated metering valve connected to both a hand operated push button and a foot operated push button |
Ron T. Hahn, Keith Marshall, Theodore J. Sally |
1986-12-23 |
| 4580300 |
Combined wall construction form and plumbing fixture mounting device for fire rated wall construction |
Earl L. Morris, Theodore J. Sally |
1986-04-08 |
| 4571901 |
Vandal-resistant security view port |
Earl L. Morris |
1986-02-25 |
| D281714 |
Tamper-proof lavatory and toilet unit |
Earl L. Morris, Theodore J. Sally |
1985-12-10 |
| 4512241 |
Plenum/vacuum chamber with duct connection for installation in cabinet of fixture to control air supply or return |
Earl L. Morris |
1985-04-23 |
| 4505189 |
Vandal-resistant and tamper-proof plenum or vacuum chamber security air flow adjustment device |
Earl L. Morris |
1985-03-19 |
| 4492430 |
Security mirror replaceable from pipe chase |
Earl L. Morris, Ron T. Hahn |
1985-01-08 |
| 4462123 |
Fabricated floor drain with large stepped flange for elastomeric trowelled covering |
Earl L. Morris |
1984-07-31 |
| 4434516 |
Wall sleeve and installation jig for multiple adjacent fixture mounting |
Earl L. Morris |
1984-03-06 |
| 4423527 |
Fabricated floor drain with combination anchoring and seepage control flange |
Earl L. Morris |
1984-01-03 |