US3472436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low friction data tape unit
Assignee: Vyzkumny Ustav Matematickych Stroju
•
Filing: 1967-10-25
•
Granted: 1969-10-14
•
Expires: 1987-10-25
Abstract
No abstract record available.
Inventors
- 👤 Stanislav Jura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:16
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/001; G; G06; G06K; G06K13/00; G06K13/18; G06K13/24; G11; G11B; G11B15/00; G11B15/18; G11B15/38; G11B15/385; G11B15/56; G11B15/58; G11B23/00; G11B23/02; G11B23/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2883475A
Cited
FR67481E
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |