| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Textiles and paper | |
| #3 | Furniture and games | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Books | |
| #2 | Typewriters | |
| #3 | Office furniture | |
| #4 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Alstyne Bonnie E Van | 11 |
| Publication | Filing date | Title |
|---|---|---|
| US2222864A | Copyholder | |
| US2181615A | Line indicator for sidewise opening books | |
| US2197164A | Line indicator | |
| US2130750A | Line indicator and means of attachment to a notebook | |
| US2034930A | Copy holder and stand | |
| US1990104A | Attachment for copyholders | |
| US1980709A | Copyholder | |
| US1984711A | Copyholder | |
| US2034929A | Copy holder | |
| US1990103A | Copyholder | |
| US1969916A | Copyholder |