Patent Grant
D421709
| Number | Name | Date | Kind |
|---|---|---|---|
| D334133 | Hartzheim | Mar 1993 | |
| D388312 | Sorkin | Dec 1997 | |
| D394200 | Hartzheim | May 1998 | |
| 3255565 | Menzel | Jun 1966 | |
| 3693310 | Middleton | Sep 1972 | |
| 3830032 | Robb | Aug 1974 | |
| 4000591 | Courtois | Jan 1977 | |
| 4483119 | Hernandez | Nov 1984 | |
| 4655023 | Yung | Apr 1987 | |
| 4682461 | Sizemore | Jul 1987 | |
| 4756641 | Hartzheim | Jul 1988 | |
| 5107654 | Leonardis | Apr 1992 | |
| 5201869 | Roethel | Apr 1993 | |
| 5222628 | Roethel | Jun 1993 | |
| 5555693 | Sorkin | Sep 1996 |
| Number | Date | Country |
|---|---|---|
| 227969 | May 1960 | AUX |
| 1 186 162 | Apr 1985 | CAX |
| 575043 | Jan 1946 | SEX |
| 1 428 675 | May 1972 | GBX |
| 1 276 874 | Jun 1972 | GBX |
| Entry |
|---|
| Product brochure from International Plastics, Corp. of Nicholasville, Kentucky for X High Chair, X Bar Chair and Joist Chair (1991). |
| Product brochure from Spillman of Columbus, Ohio for Plasclips, Meshclips and Plaschair (1994). |
| Product brochure from General Technologies, Inc. of Stafford, Texas for Reinforcing Bar Supports (1997 Price List). |
| Product brochure from Aztec Concrete Accessories, Inc. of Fontana, California for Adjustable Screed Chair (Dec. 1, 1997). |
