Perko; Howard A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Perko; Howard A..The latest application filed is for "grout propeller for helical pile".
- Perko; Howard A. - Fort Collins CO
- Perko; Howard A. - Ft. Collins CO
| Patent | Date |
|---|---|
| Grout propeller for helical pile Grant 10,947,688 - Perko , et al. March 16, 2 | 2021-03-16 |
| Grout Propeller For Helical Pile App 20200291594 - Perko; Howard A. ; et al. | 2020-09-17 |
| Grouted helical pile Grant 10,767,334 - Perko , et al. Sep | 2020-09-08 |
| Grouted Helical Pile App 20190271131 - Perko; Howard A. ; et al. | 2019-09-05 |
| Elevated Equipment Assemblies, Equipment-supporting Platforms, And Related Methods App 20160281907 - Perko; Howard A. | 2016-09-29 |
| Elevated equipment assemblies, equipment-supporting platforms, and related methods Grant 9,365,998 - Perko June 14, 2 | 2016-06-14 |
| Systems for elevating a building structure above grade, and related methods Grant 9,249,593 - Perko , et al. February 2, 2 | 2016-02-02 |
| Sacrificial tip and method of installing a friction pile Grant 9,057,169 - Perko June 16, 2 | 2015-06-16 |
| Systems For Elevating A Building Structure Above Grade, And Related Methods App 20140290154 - Perko; Howard A. ; et al. | 2014-10-02 |
| Elevated Equipment Assemblies, Equipment-supporting Platforms, And Related Methods App 20140119838 - Perko; Howard A. | 2014-05-01 |
| Helical pier with opposed external bars Grant D613,881 - Perko April 13, 2 | 2010-04-13 |
| Helical pier Grant D612,954 - Perko March 30, 2 | 2010-03-30 |
| Helice pier post and method of installation Grant 6,722,821 - Perko , et al. April 20, 2 | 2004-04-20 |
| Tubular pipe helix blade system App 20030159839 - Perko, Howard A. | 2003-08-28 |
| Earth anchors and methods for their use Grant 6,058,662 - Perko May 9, 2 | 2000-05-09 |
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