| Number | Name | Date | Kind |
|---|---|---|---|
| 3548367 | Bruetsch | Dec 1970 | |
| 3652977 | Feldberg | Mar 1972 | |
| 4568138 | McKenzie | Feb 1986 | |
| 5192233 | Suffredini et al. | Mar 1993 |
| Entry |
|---|
| Extracts (15 pages) from a proposal prepared for and presented to the Boeing Company on Jul. 23, 1998 in Seattle, Washington. |