Patent US2938952A successfully refreshed from Google Patents.
US2938952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for typing, verifying and printing
Assignee: Unisys Corp
•
Filing: 1954-12-20
•
Granted: 1960-05-31
•
Expires: 1974-12-20
Abstract
No abstract record available.
Inventors
- 👤 Edwin O Roggenstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:31
CPC Classifications
B; B41; B41J; B41J3/00; B41J3/44; B41J3/50; B41J5/00; B41J5/30; B41J5/31; B41J5/40; B41J5/42
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1954522A
Cited
US1976615A
Cited
US2030405A
Cited
US2390413A
Cited
US2456726A
Cited
US2560474A
Cited
US2605879A
Cited
US2540030A
Cited
US2700446A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |