The broken lines shown in the figures are for the purpose of illustrating portions of the stepped spiral chute assembly having friction reduction panels and form no part of the claimed design.
The broken lines shown in the figures are for the purpose of illustrating portions of the stepped spiral chute assembly having friction reduction panels and form no part of the claimed design.
Number | Name | Date | Kind |
---|---|---|---|
964444 | Mowery | Jul 1910 | A |
1013292 | Goehr | Jan 1912 | A |
1480105 | Pardee | Jan 1924 | A |
1712714 | Pardee | May 1929 | A |
2437259 | Kautz | Mar 1943 | A |
3513956 | Rayment | May 1970 | A |
3565226 | Winchester | Feb 1971 | A |
4222482 | Kelley | Sep 1980 | A |
4418813 | Leinenger | Dec 1983 | A |
4726456 | Hogsett | Feb 1988 | A |
D296489 | Nair | Jun 1988 | S |
5083651 | Wiese | Jan 1992 | A |
5598914 | Sulzer | Feb 1997 | A |
6371275 | Terrell | Apr 2002 | B1 |
7641034 | Boustani | Jan 2010 | B2 |
8733529 | Heddles | May 2014 | B2 |
9415936 | Rodriguez | Aug 2016 | B1 |
Number | Date | Country | |
---|---|---|---|
Parent | 14622721 | Feb 2015 | US |
Child | 29561349 | US |