|
The ornamental design for a combined seat and backrest unit for an office chair, as shown and described. |
|||||||||||||||||
FIG. 1 is a side elevational view of a combined seat and backrest unit for an office chair embodying the design;
FIG. 2 is a front elevational view of the combined seat and backrest unit for an office chair of FIG. 1;
FIG. 3 is a rear elevational view of the combined seat and backrest unit for an office chair of FIG. 1;
FIG. 4 is a side elevational view of a modified form of a combined seat and backrest unit for an office chair embodying the design;
FIG. 5 is a front elevational view of the combined seat and backrest unit for an office chair of FIG. 4;
FIG. 6 is a rear elevational view of the combined seat and backrest unit for an office chair of FIG. 4.
The side of the combined seat and backrest unit for an office chair that is not shown is a mirror image of the side that is shown in FIG. 1.
| Patent | Priority | Assignee | Title |
| 192799, | |||
| 218816, | |||
| D249406, | Jun 04 1976 | Center for Design Research and Development N.V. | Chair |
| D250374, | Mar 08 1977 | C T TEN L P ; G F OFFICE FURNITURE, LTD | Chair |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jun 11 1979 | Knoll International, Inc. | (assignment on the face of the patent) | / | |||
| Nov 27 1990 | KNOLL INTERNATIONAL, INC , A CORP OF DE | WESTINGHOUSE ELECTRIC CORPORATION, A CORP OF PA | NUNC PRO TUNC ASSIGNMENT SEE DOCUMENT FOR DETAILS | 005570 | /0598 | |
| Feb 28 1996 | KNOLL, INC | NATIONSBANK, N A , AS COLLATERAL AGENT | SECURITY AGREEMENT | 007803 | /0214 | |
| Feb 29 1996 | Westinghouse Electric Corporation | KNOLL, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 007888 | /0022 | |
| Aug 06 1997 | NATIONSBANK, N A AS COLLATERAL AGENT | KNOLL, INC | RELEASE BY SECURED PARTY SEE DOCUMENT FOR DETAILS | 008660 | /0504 |
| Date | Maintenance Fee Events |
| Date | Maintenance Schedule |