Patent US3143379A successfully refreshed from Google Patents.
US2636734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet feeder
Assignee: Unisys Corp
•
Filing: 1947-09-05
•
Granted: 1953-04-28
•
Expires: 1967-09-05
Abstract
No abstract record available.
Inventors
- 👤 Don E Loeber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:28
CPC Classifications
G; G06; G06K; G06K13/00; G06K13/02; G06K13/08; G06K13/10; G06K13/103
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1991989A
Cited
US761970A
Cited
US876914A
Cited
US1027613A
Cited
US1741451A
Cited
US2080968A
Cited
US2163145A
Cited
US2351854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |