| Number | Name | Date | Kind |
|---|---|---|---|
| D85425 | Wolfsheim | Oct 1931 | S |
| D90041 | Wright | May 1933 | S |
| D158893 | O'Brien | Jun 1950 | S |
| 2727241 | Smith | Dec 1955 | A |
| D214439 | Wormser | Jun 1969 | S |
| D243352 | Gray, Sr. | Feb 1977 | S |
| D248713 | Dedrick | Aug 1978 | S |
| D261465 | Minchew | Oct 1981 | S |
| 4420902 | Rayner | Dec 1983 | A |
| D296089 | Pouliot | Jun 1988 | S |
| D298998 | Hurlstone | Dec 1988 | S |
| 5036998 | Dunn | Aug 1991 | A |
| D324191 | Abare | Feb 1992 | S |
| D362405 | Dallimore | Sep 1995 | S |
| D384350 | Nuevo | Sep 1997 | S |
| 6219966 | Lapointe | Apr 2001 | B1 |
| D462295 | Bates | Sep 2002 | S |
| D462441 | Garner | Sep 2002 | S |
| D553121 | Gondo | Oct 2007 | S |
| D571359 | Chang | Jun 2008 | S |
| D598809 | Smith | Aug 2009 | S |
| D630124 | Connell | Jan 2011 | S |
| 8971560 | Lyons | Mar 2015 | B2 |
| 20130142371 | Martin | Jun 2013 | A1 |
| Entry |
|---|
| iMore—Bloombox natural iPhone amplifier, announced Aug. 21, 2012 [online], [site visited Sep. 5, 2017]. Available from internet, URL: <https://www.imore.com/bloombox-natural-iphone-amplifier-dock-doubles-fancy-planter>. |
| Apple Insider—Sound Cylinder, announced Mar. 8, 2013 [online], [site visited Sep. 5, 2017]. Available from internet, URL: <https://forums.appleinsider.com/discussion/156380/review-definitive-technologys-sound-cylinder-delivers-premium-audio-in-compact-package>. |
| Designbloom—marble iphone amplifier, announced Oct. 2, 2014 [online], [site visited Sep. 5, 2017]. Available from internet, URL: <https://www.designboom.com/design/ovo-amplifier-monitillo-marmi-carrara-marble-12-02-2014/>. |
| Amplifier, announced Dec. 19, 2016 [online], [site visited Sep. 5, 2017]. Available from internet, URL: <https://www.etsy.com/uk/listing/510578924/boozik-bamboo-iphone-amplifier-otter?ga—order=most—relevant&ga—search—type=all&ga—view—type=gallery&ga—search—query=iphone amplifier&ref=sc—gallery—5&plkey=5e6d5425c32ad13a1372105812bc59bf8f85d8a2:510578924>. |
| An Unpublished photograph taken by Trent A. Harshman of a Double Horn Phone Holder on display at the Ambiente Trade Show, Frankfort Am Main, Germany in Feb. 2016. Unknown if on sale. |
| Unpublished photograph taken Apr. 2016 by Trent A. Harshman of a Tubular Phone Amplifier With Plant Holes on display and not for sale at the Canton Fair, Guangzhou, China. |