Patent US2643355A successfully refreshed from Google Patents.
US2643355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Computer for converting electrical code into shaft rotation
Assignee: Individual
•
Filing: 1951-06-15
•
Granted: 1953-06-23
•
Expires: 1971-06-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Ludlow B Hallman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:24
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/66; H03M1/74; Y; Y10; Y10S; Y10S177/00; Y10S177/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2537427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |