Mortenson; Carl N.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Mortenson; Carl N..The latest application filed is for "hand truck assemblies and methods of constructing and operating them".
- Mortenson; Carl N. - Midland MI
| Patent | Date |
|---|---|
| Hand truck assemblies and methods of constructing and operating them Grant 5,393,081 - Mortenson February 28, 1 | 1995-02-28 |
| Rapidly erectable and strikeable shelter frame system and methods of erecting and striking such systems Grant 5,167,246 - Mortenson December 1, 1 | 1992-12-01 |
| Automatically shifting stair climber structure for a repositionable hand truck Grant 5,042,827 - Mortenson August 27, 1 | 1991-08-27 |
| Repositionable hand truck Grant 4,762,333 - Mortenson August 9, 1 | 1988-08-09 |
| Two-wheeled hand trucks Grant 4,563,014 - Mortenson January 7, 1 | 1986-01-07 |
| Stair climber for hand trucks Grant 4,420,166 - Law , et al. December 13, 1 | 1983-12-13 |
| Self storing lift gate assembly Grant 4,078,676 - Mortenson March 14, 1 | 1978-03-14 |
| Two-wheeled hand trucks Grant 3,997,182 - Mortenson December 14, 1 | 1976-12-14 |
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