The broken lines in the drawings depict unclaimed environmental subject matter.
The broken lines in the drawings depict unclaimed environmental subject matter.
| Number | Name | Date | Kind |
|---|---|---|---|
| 1869014 | Lincoln | Jul 1932 | A |
| 2079956 | Burgett | May 1937 | A |
| 2188070 | Baird | Jan 1940 | A |
| 3098147 | Rosenberger | Jul 1963 | A |
| 3167636 | Bosteels | Jan 1965 | A |
| 3248516 | Gilliland | Apr 1966 | A |
| 3256418 | Bauer | Jun 1966 | A |
| 3668364 | Nomura | Jun 1972 | A |
| 3734369 | Johnson | May 1973 | A |
| 4068106 | Shaputis | Jan 1978 | A |
| 4150772 | Auer | Apr 1979 | A |
| 4168406 | Torrani | Sep 1979 | A |
| 4179056 | Schmerling | Dec 1979 | A |
| 4344553 | Lesher | Aug 1982 | A |
| 5060882 | Rousculp | Oct 1991 | A |
| 5948296 | Williams | Sep 1999 | A |
| 6484964 | Cooper | Nov 2002 | B1 |
| 7176411 | Enyedy | Feb 2007 | B2 |
| 7398965 | Glaser | Jul 2008 | B2 |
| 7615723 | Matiash | Nov 2009 | B2 |
| 8232504 | Ni | Jul 2012 | B2 |
| 8426773 | Willenkamp | Apr 2013 | B2 |
| 8878097 | Enyedy | Nov 2014 | B2 |
| 9180545 | Enyedy | Nov 2015 | B2 |
| 9399561 | Lahti | Jul 2016 | B2 |
| 9517524 | Miller | Dec 2016 | B2 |
| 20030117009 | Flood | Jun 2003 | A1 |
| 20050218189 | Maes | Oct 2005 | A1 |
| 20160199889 | Larsen | Jul 2016 | A1 |