Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4659059 | Sealed dashpot mechanism for delayed closing plumbing valves | Theodore J. Sally, Ron T. Hahn | 1987-04-21 |
| 4580300 | Combined wall construction form and plumbing fixture mounting device for fire rated wall construction | V. Walter Hafner, Theodore J. Sally | 1986-04-08 |
| 4571901 | Vandal-resistant security view port | V. Walter Hafner | 1986-02-25 |
| D281714 | Tamper-proof lavatory and toilet unit | V. Walter Hafner, 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 | V. Walter Hafner | 1985-04-23 |
| 4505189 | Vandal-resistant and tamper-proof plenum or vacuum chamber security air flow adjustment device | V. Walter Hafner | 1985-03-19 |
| 4492430 | Security mirror replaceable from pipe chase | V. Walter Hafner, Ron T. Hahn | 1985-01-08 |
| 4480163 | Vandal-resistant push button electrical switch assembly | Walter V. Hafner, Ron T. Hahn | 1984-10-30 |
| 4462123 | Fabricated floor drain with large stepped flange for elastomeric trowelled covering | V. Walter Hafner | 1984-07-31 |
| 4453202 | Vandal-resistant light fixture | Ron T. Hahn, Theodore J. Sally | 1984-06-05 |
| 4434516 | Wall sleeve and installation jig for multiple adjacent fixture mounting | V. Walter Hafner | 1984-03-06 |
| 4423527 | Fabricated floor drain with combination anchoring and seepage control flange | V. Walter Hafner | 1984-01-03 |
| 4203173 | Overflow inhibitor for plumbing fixtures | Walter V. Hafner, Theodore J. Sally | 1980-05-20 |
| 4195374 | Plumbing fixture overflow limiter | Walter V. Hafner, Theodore J. Sally | 1980-04-01 |
| 4184702 | Waste drain coupling for plumbing fixtures | — | 1980-01-22 |