US2750882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet feeding means for dual purpose duplicator
Assignee: Individual
•
Filing: 1953-01-21
•
Granted: 1956-06-19
•
Expires: 1973-01-21
Abstract
No abstract record available.
Inventors
- 👤 Davidson William Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:27
CPC Classifications
B; B41; B41L; B41L19/00; B41L19/02; B41L21/00; B41L21/02; B41L21/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1326562A
Cited
US1570979A
Cited
US1597941A
Cited
US2270273A
Cited
US2517868A
Cited
US2618479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-19 | 1959-12-19 | 1960-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-19 | 1963-12-19 | 1964-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-19 | 1967-12-19 | 1968-06-19 | $7700.00 | Window Closed / Lapsed |