Patent US3019768A successfully refreshed from Google Patents.
US3019768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connector means for a tandem writing unit
Assignee: Paper Mate Manufacturing Co
•
Filing: 1957-01-18
•
Granted: 1962-02-06
•
Expires: 1977-01-18
Abstract
No abstract record available.
Inventors
- 👤 Frank H Seyer
- 👤 James L Marcotte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:15
CPC Classifications
B; B43; B43K; B43K7/00; B43K7/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US115658A
Cited
US509884A
Cited
US1314235A
Cited
US367578A
Cited
US676675A
Cited
US1155589A
Cited
US1300412A
Cited
US1900922A
Cited
US2385971A
Cited
CH286888A
Cited
FR1119233A
Cited
US2827311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |