| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 4 | |
| #2 | Australia | 1 | |
| #3 | Belgium | 1 | |
| #4 | Brazil | 1 | |
| #5 | Germany | 1 | |
| #6 | Denmark | 1 | |
| #7 | France | 1 | |
| #8 | United Kingdom | 1 | |
| #9 | Italy | 1 | |
| #10 | Netherlands | 1 | |
| #11 | Norway | 1 | |
| #12 | Sweden | 1 |
| # | Technology | |
|---|---|---|
| #1 | Wheelchairs and sledges | |
| #2 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Trammell Jr Earl M | 3 |
| #2 | Trammell Jr E M | 2 |
| #3 | Trammell E | 2 |
| #4 | Trammell E M Jr | 1 |
| #5 | Earl Monroe Trammel J | 1 |
| #6 | Trammell Jun Earl Monroe | 1 |
| #7 | Trammell Earl Monroe Jr | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4159652A | Bicycle drive assembly | |
| US4029334A | Bicycle drive assembly | |
| US3906807A | Bicycle drive assembly | |
| DE2345522A1 | Bicycle pedal drive system - with reciprocating pedals linked to chain wheel by spring loaded variable drive levers | |
| NL7312439A | Bicycle pedal drive system - with reciprocating pedals linked to chain wheel by spring loaded variable drive levers | |
| GB1401727A | Drive assembly for physically propelled vehicles | |
| AU5945673A | Bicycle drive assembly | |
| US3779099A | Bicycle drive assembly |