Patent US2183174A successfully refreshed from Google Patents.
US2634849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multicopy attachment for typewriting machines
Assignee: Individual
•
Filing: 1949-11-08
•
Granted: 1953-04-14
•
Expires: 1969-11-08
Abstract
No abstract record available.
Inventors
- 👤 Henry Beulah Louise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:51
CPC Classifications
B; B41; B41J; B41J35/00; B41J35/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US456808A
Cited
US1027732A
Cited
US1198638A
Cited
US1406873A
Cited
US1452822A
Cited
US1716454A
Cited
US1705945A
Cited
US1949107A
Cited
US2011104A
Cited
US2069277A
Cited
US2092780A
Cited
US2058859A
Cited
US2103734A
Cited
US2217180A
Cited
US2214414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-13 | 1956-10-13 | 1957-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-13 | 1960-10-13 | 1961-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-13 | 1964-10-13 | 1965-04-14 | $7700.00 | Window Closed / Lapsed |