US3017981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ribbon shield
Assignee: Individual
•
Filing: 1960-12-05
•
Granted: 1962-01-23
•
Expires: 1980-12-05
Abstract
No abstract record available.
Inventors
- 👤 Douglas L Keith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:39
CPC Classifications
B; B41; B41J; B41J35/00; B41J35/26
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
71 words
IN A MACHINE OF THE TYPE DESCRIBED, A RIBBON SHIELD FOR PROTECTING THE PAPER TO BE PRINTED UPON FROM CONTACT WITH THE INKING RIBBON OF THE MACHINE, SAID SHIELD BEINGF FORMED BY A THIN ELONGATED PLATE OF POLYTETRAFLUORO-ETHYLENE HAVING AN APERTURE, GUIDE LOOPS FOR THE GUIDANCE OF THE INKING RIBBON PAST SAID APERTURE AT EITHER SIDE OF SAID APERTURE, AND LOOPS FOR THE RECEPTION OF SUPPORTING ARMS AT ITS OPPOSITE ENDS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |