| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 23 | |
| #2 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Machines | |
| #3 | Machine tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Frank Placco Oscar | 8 |
| #2 | Bangs Ralph C | 6 |
| #3 | Royal Marcher | 2 |
| #4 | Oscar Placco | 2 |
| #5 | Adolph Katz | 1 |
| #6 | Paris Elliot J | 1 |
| #7 | Toth Geiza B K | 1 |
| #8 | Dauer Ernest I | 1 |
| #9 | Placco Oscar F | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2313668A | Ear ornament | |
| US2242502A | Implement for and method of forming and applying jump rings | |
| US2233071A | Jewelry clasp | |
| US2192504A | Locket construction | |
| US2155066A | Article of jewelry | |
| US2205918A | Jewelry | |
| US2140465A | Gem setting tool | |
| US2140594A | Ornamental device | |
| US2107684A | Monogram construction | |
| US2092146A | Monogram construction | |
| US2080060A | Interlock jewelry | |
| US2175305A | Ornament construction | |
| US2096133A | Multiple brooch construction | |
| US2117823A | Ornament and mounting therefor | |
| US2087331A | Ornamental brooch construction | |
| US2045665A | Finger ring and the like | |
| US2059276A | Brooch construction | |
| US2021200A | Ornamental clasp | |
| US2012401A | Ornamental jewelry construction | |
| GB410696A | Improvements in and relating to brooches |