Patent US2993944A successfully refreshed from Google Patents.
Patent US3531108A successfully refreshed from Google Patents.
US3531108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Document stacker and/or sorter
Assignee: Control Data Corp
•
Filing: 1968-06-04
•
Granted: 1970-09-29
•
Expires: 1988-06-04
Abstract
No abstract record available.
Inventors
- 👤 Jacob Babinow
- 👤 William P Gingras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:26
CPC Classifications
G; G06; G06K; G06K13/00; G06K13/02; G06K13/06; B; B65; B65H; B65H29/00; B65H29/38; B65H29/40; B65H29/68; B65H2405/00; B65H2405/30; B65H2405/33; B65H2405/331; B65H2405/3311
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2837198A
Cited
US3343672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |