US3534846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Typewriter for braille dots
Assignee: Individual
•
Filing: 1967-12-11
•
Granted: 1970-10-20
•
Expires: 1987-12-11
Abstract
No abstract record available.
Inventors
- 👤 Masaharu Watari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:57
CPC Classifications
B; B41; B41J; B41J3/00; B41J3/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1414229A
Cited
US1767247A
Cited
US1822938A
Cited
GB542003A
Cited
US2680507A
Cited
US2842245A
Cited
US3032164A
Cited
US3253691A
Cited
US3254750A
Cited
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 |