Patent US4407205A successfully refreshed from Google Patents.
Patent US3301439A successfully refreshed from Google Patents.
Patent US2851141A successfully refreshed from Google Patents.
US2851141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire printing typewriter
Assignee: International Business Machines Corp
•
Filing: 1955-06-20
•
Granted: 1958-09-09
•
Expires: 1975-06-20
Abstract
No abstract record available.
Inventors
- 👤 Harold J Kistner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:11
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/22; B41J2/23; B41J2/27
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |