子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | Tractor cleat | US42514820 | 1920-11-19 | US1422377A | 1922-07-11 | CURTISS ROBNETT |
| 82 | Resistance appendage for tractor-wheels | US39248720 | 1920-06-28 | US1384068A | 1921-07-12 | JONES WILLIAM J |
| 83 | Traction-wheel | US45671221 | 1921-03-29 | US1383078A | 1921-06-28 | COTTRELL JAMES W |
| 84 | Tractor-tread | US32137819 | 1919-09-03 | US1381857A | 1921-06-14 | BERTHELSEN ANDERS L |
| 85 | Tractor-wheel | US1367943D | US1367943A | 1921-02-08 | ||
| 86 | Tractor-wheel | US34847019 | 1919-12-30 | US1363317A | 1920-12-28 | JOHN GREFE |
| 87 | Traction-wheel | US35260820 | 1920-01-19 | US1360451A | 1920-11-30 | ALFREDO SCOTTI |
| 88 | Traction-wheel | US16543817 | 1917-04-30 | US1333055A | 1920-03-09 | ADAMS HARRY W |
| 89 | Traction-lug | US29270019 | 1919-04-25 | US1327867A | 1920-01-13 | HENSEL JOHN S |
| 90 | Anticlog tractor-wheel | US1323687D | US1323687A | 1919-12-02 | ||
| 91 | Assiaurob to | US1312176D | US1312176A | 1919-08-05 | ||
| 92 | Traction-tread. | US23885618 | 1918-06-08 | US1298924A | 1919-04-01 | FUDCZKO HILARY |
| 93 | Wheel. | US19665317 | 1917-10-15 | US1286536A | 1918-12-03 | COLDWELL WILLIAM H |
| 94 | Traction-engine. | US12507616 | 1916-10-11 | US1261701A | 1918-04-02 | CHANTINY GEORGE J; CHANTINY FRANK T |
| 95 | Traction device for vehicle-wheels. | US9715216 | 1916-05-12 | US1251435A | 1917-12-25 | SNEEDER CHARLES O |
| 96 | Tractor-wheel. | US12614416 | 1916-10-17 | US1246443A | 1917-11-13 | LOFLAND ALFRED H |
| 97 | Tractor-wheel. | US15205617 | 1917-03-02 | US1232635A | 1917-07-10 | WHITMAN HENRY L JR |
| 98 | Auto-tire. | US6721415 | 1915-12-16 | US1220653A | 1917-03-27 | LOFFI GEORGE |
| 99 | Traction device. | US6915315 | 1915-12-29 | US1202460A | 1916-10-24 | WEEBER CHRISTIAN F |
| 100 | Traction whxel | US1195066D | US1195066A | 1916-08-15 | ||
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