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 |
|---|---|---|---|---|---|---|
| 221 | Pool ball | US3439917D | 1965-04-05 | US3439917A | 1969-04-22 | GENTILE CHARLES J |
| 222 | Highly resilient polybutadiene ball | US48258465 | 1965-08-25 | US3241834A | 1966-03-22 | STINGLEY NORMAN H |
| 223 | Molded plastic game ball | US12941561 | 1961-08-04 | US3228686A | 1966-01-11 | FAULKNER RD ELLIS MAY |
| 224 | Baseball | US8436149 | 1949-03-30 | US2645487A | 1953-07-14 | HAWES EDWARD H |
| 225 | Ball | US37543741 | 1941-01-22 | US2325128A | 1943-07-27 | GRADY JOHN H |
| 226 | Ball | US36522840 | 1940-11-12 | US2266390A | 1941-12-16 | BLANCHFIELD PAUL E; STAFFORD RAPHAEL A |
| 227 | Solid play ball | US7681036 | 1936-04-28 | US2093737A | 1937-09-21 | REACH MILTON B |
| 228 | Soft ball | US4590335 | 1935-10-21 | US2081531A | 1937-05-25 | FEGAN ALBERT E |
| 229 | Play ball | US65793633 | 1933-02-23 | US2060987A | 1936-11-17 | GRADY JOHN H |
| 230 | Baseball | US66068433 | 1933-03-14 | US1994703A | 1935-03-19 | HAWES EDWARD H |
| 231 | Ball | US37819829 | 1929-07-15 | US1980472A | 1934-11-13 | CLARKE JOSEPH W |
| 232 | Process of covering game balls | US43777730 | 1930-03-21 | US1960803A | 1934-05-29 | EDWARD BAUMER |
| 233 | Play ball and method of making the same | US56670131 | 1931-10-03 | US1919357A | 1933-07-25 | BEEBE JOHN D |
| 234 | Polo ball | US43896830 | 1930-03-26 | US1803121A | 1931-04-28 | GORDON MEURISSE |
| 235 | Baseball | US15694926 | 1926-12-24 | US1671237A | 1928-05-29 | GRADY JOHN H |
| 236 | Baseball center and process of producing the same | US16747827 | 1927-02-11 | US1631317A | 1927-06-07 | FOX WILLIAM H |
| 237 | Cricket, hockey, and like ball | US5994725 | 1925-10-01 | US1624822A | 1927-04-12 | WILLIAM BELDAM GEORGE |
| 238 | Ball | US75519124 | 1924-12-11 | US1550795A | 1925-08-25 | FOX WILLIAM H |
| 239 | Ball | US60421022 | 1922-12-01 | US1517859A | 1924-12-02 | O'SHEA DENNIS C |
| 240 | Baseball | US1517022D | US1517022A | 1924-11-25 | ||
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