Patent US2850240A successfully refreshed from Google Patents.
US2850240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotational displacement indicating system
Assignee: International Business Machines Corp
•
Filing: 1952-10-28
•
Granted: 1958-09-02
•
Expires: 1972-10-28
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Dickinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:17
CPC Classifications
H; H03; H03M; H03M1/00; G; G08; G08C; G08C19/00; G08C19/38; G08C19/46; G08C19/48; H03M1/12; H03M1/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE366548C
Cited
US2184843A
Cited
US2088613A
Cited
US2227474A
Cited
US2363941A
Cited
US2656106A
Cited
US2462275A
Cited
US2533739A
Cited
US2420590A
Cited
US2697551A
Cited
US2556556A
Cited
US2529666A
Cited
FR975941A
Cited
US2700502A
Cited
US2585630A
Cited
US2680241A
Cited
US2691100A
Cited
US2692727A
Cited
US2537427A
Cited
US2641522A
Cited
US2730698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |