US3387694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Key lever return mechanism
Assignee: AT&T Teletype Corp
•
Filing: 1966-12-21
•
Granted: 1968-06-11
•
Expires: 1986-12-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur A Hagstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:02
CPC Classifications
B; B41; B41J; B41J5/00; B41J5/08; B41J5/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1532832A
Cited
US956020A
Cited
US2723740A
Cited
US2975971A
Cited
US2861262A
Cited
US3229798A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |