Grierson; Keith J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Grierson; Keith J..The latest application filed is for "bearing retainer for a vacuum cleaner motor".
- Grierson; Keith J. - Lexington KY
- Grierson; Keith J. - Ramsey County MN
- Grierson; Keith J. - Roseville MN
| Patent | Date |
|---|---|
| Bearing retainer for a vacuum cleaner motor Grant 5,059,042 - Grierson October 22, 1 | 1991-10-22 |
| Electric motor coil-retaining means Grant 4,469,967 - Grierson , et al. September 4, 1 | 1984-09-04 |
| Motor Housing Construction For A Vacuum Cleaner With Strain-relief For Motor Leads Grant 3,826,935 - Grierson , et al. July 30, 1 | 1974-07-30 |
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