Issued Patents All Time
Showing 51–73 of 73 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5143344 | Apparatus for manufacturing precast concrete articles | David L. Johnson | 1992-09-01 |
| 5096648 | Method of manufacturing precast concrete articles | David L. Johnson | 1992-03-17 |
| 5027951 | Apparatus and method for packaging of articles | — | 1991-07-02 |
| 4982089 | Method for obtaining the spectra of an unstable product | — | 1991-01-01 |
| 4969834 | Jumper cable apparatus | — | 1990-11-13 |
| D305672 | Advertising display unit for merchandising cooler | Paul H. Corden | 1990-01-23 |
| 4738042 | Integral moving message device for merchandising display case | Paul H. Corden, Joseph G. Correia, Dan G. Hopkins | 1988-04-19 |
| D293044 | Capped case for holding and transporting a carpenter's level | — | 1987-12-08 |
| 4677905 | Food steaming apparatus | — | 1987-07-07 |
| 4557427 | Powered strap accumulator | — | 1985-12-10 |
| 4553060 | Electromechanical resonator apparatus | William J. Domino, Donald P. Havens | 1985-11-12 |
| 4536270 | Apparatus and method for shielding magnetic heads during a sputtering operation | — | 1985-08-20 |
| 4416122 | Unitary removable refrigeration system and cooler | — | 1983-11-22 |
| 4405909 | Mechanical filter with box-type coupling structure | Donald P. Havens | 1983-09-20 |
| 4373396 | Mechanical filter with acoustic sensing | — | 1983-02-15 |
| 4306204 | Bandpass mechanical filter | — | 1981-12-15 |
| 4297781 | Method of aligning a precision grinding wheel assembly | Douglas J. Hennenfent, Allan L. Holmstrand | 1981-11-03 |
| 4287497 | Integrated universal RF joint and gimbal system | — | 1981-09-01 |
| 4279102 | Method of manufacturing narrow track ferrite head cores | Douglas J. Hennenfent, Allan L. Holmstrand | 1981-07-21 |
| 4267206 | Process of making high-temperature magnetic tape | — | 1981-05-12 |
| 4236355 | Precision grinding wheel mount | Douglas J. Hennenfent, Allan L. Holmstrand | 1980-12-02 |
| 4221962 | Fiber-optic moisture sensor for composite structures | Gregory T. Black | 1980-09-09 |
| 4189514 | Process of making high-temperature magnetic tape | — | 1980-02-19 |