Patent US2902121A successfully refreshed from Google Patents.
Patent US3534847A successfully refreshed from Google Patents.
US3534847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed teleprinter
Assignee: Individual
•
Filing: 1966-09-21
•
Granted: 1970-10-20
•
Expires: 1986-09-21
Abstract
No abstract record available.
Inventors
- 👤 Frederick P Willcox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:55
CPC Classifications
H; H04; H04L; H04L17/00; H04L17/16; H04L17/24; B; B41; B41J; B41J21/00; B41J29/00; B41J29/50; H04L17/22; Y; Y10; Y10S; Y10S400/00; Y10S400/904
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |