Patent US3077255A successfully refreshed from Google Patents.
US3077255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Typing impression control for typewriters
Assignee: Unisys Corp
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Filing: 1960-07-11
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Granted: 1963-02-12
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Expires: 1980-07-11
Abstract
No abstract record available.
Inventors
- 👤 Russell E Coelman
- 👤 Evert G Israelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:58
CPC Classifications
B; B41; B41J; B41J7/00; B41J7/92; B41J7/94
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
IN A WRITING MACHINE HAVING TYPE BAR OPERATING MEANS AND A MOVABLE POWER ARM; A PRINTING IMPRESSION CONTROL COMPRISING IMPACT CONTROL MEANS, LEVER MEANS FULCRUMED ON AND ACTUATED BY SAID POWER ARM FOR OPERATING SAID TYPE BAR OPERATING MEANS AND SAID IMPACT CONTROL MEANS, AND LIMIT MEANS FOR ARRESTING THE OPERATION OF SAID IMPACT CONTROL MEANS FOR MODIFYING THE
Claim 2
Dependent Claim
59 words
IN A WRITING MACHINE HAVING TYPE BAR OPERATING MEANS AND A MOVABLE POWER ARM; A PRINTING IMPRESSION CONTROL COMPRISING IMPACT CONTROL MEANS, LEVER MEANS FULCRUMED ON AND ACTUATED BY SAID POWER ARM FOR OPERATING SAID TYPE BAR OPERATING MEANS AND SAID IMPACT CONTROL MEANS, AND LIMIT MEANS FOR ARRESTING THE OPERATION OF SAID IMPACT CONTROL MEANS FOR MODIFYING THE
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) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |