Patent US2988057A successfully refreshed from Google Patents.
US2988057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating cylinder positioning mechanism
Assignee: International Business Machines Corp
•
Filing: 1958-02-06
•
Granted: 1961-06-13
•
Expires: 1978-02-06
Abstract
No abstract record available.
Inventors
- 👤 Frank A Litz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:46
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/08; F15B15/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US657113A
Cited
US2304894A
Cited
US2384218A
Cited
US2374588A
Cited
US2443333A
Cited
FR1010584A
Cited
DE917585C
Cited
US2870748A
Cited
US2915044A
Cited
US2811141A
Cited
US2825307A
Cited
US2902009A
Cited
US2911956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |