Christianson; John R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Christianson; John R..The latest application filed is for "level and level-straightedge system".
- Christianson; John R. - Waukesha WI
| Patent | Date |
|---|---|
| Level and level-straightedge system Grant 10,281,274 - Block , et al. | 2019-05-07 |
| Level and Level-Straightedge System App 20170370718 - Block; Daniel L. ; et al. | 2017-12-28 |
| Method for Manufacturing High-Visibility Measurement Tool App 20110108428 - CHRISTIANSON; JOHN R. ; et al. | 2011-05-12 |
| Torpedo level Grant D628,914 - Kim , et al. December 14, 2 | 2010-12-14 |
| Box level Grant D623,544 - Kim , et al. September 14, 2 | 2010-09-14 |
| Side brace for central-vial region of a box level Grant D618,120 - Kim , et al. June 22, 2 | 2010-06-22 |
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