The broken lines in the drawings depict unclaimed environmental subject matter.
The broken lines in the drawings depict unclaimed environmental subject matter.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2011-007969 | Apr 2011 | JP | national |
| Number | Name | Date | Kind |
|---|---|---|---|
| 3559764 | Wheeler, Jr. | Feb 1971 | A |
| 3926280 | Hoffman | Dec 1975 | A |
| 4234014 | Knight | Nov 1980 | A |
| 4295545 | Hiei | Oct 1981 | A |
| D293461 | Chang | Dec 1987 | S |
| 4733753 | Miyake | Mar 1988 | A |
| 4735288 | Uematsu et al. | Apr 1988 | A |
| 4807721 | Fujiwara | Feb 1989 | A |
| D307913 | Ogasawara et al. | May 1990 | S |
| D308571 | Albertini et al. | Jun 1990 | S |
| D317315 | Miyake et al. | Jun 1991 | S |
| D317644 | Ito et al. | Jun 1991 | S |
| D322444 | Shea | Dec 1991 | S |
| D400211 | Thallemer et al. | Oct 1998 | S |
| D510371 | Tigerholm | Oct 2005 | S |
| D510587 | Tigerholm | Oct 2005 | S |
| D511536 | Tigerholm | Nov 2005 | S |
| 20040099483 | Song | May 2004 | A1 |