US2422681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tool control
Assignee: Elsag Bailey Inc
•
Filing: 1943-02-01
•
Granted: 1947-06-24
•
Expires: 1963-02-01
Abstract
No abstract record available.
Inventors
- 👤 Johnson Clarence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:45
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/18; B23Q2735/00; B23Q2735/02; B23Q2735/08; B23Q2735/082; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/301176; Y10T409/302688; Y10T409/302744; Y10T82/00; Y10T82/14; Y10T82/141; Y10T82/25; Y10T82/2531; Y10T82/2533; Y10T82/2552; Y10T82/2554; Y10T82/2556
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1656544A
Cited
US1709674A
Cited
US1716115A
Cited
DE513715C
Cited
US1871752A
Cited
US1961089A
Cited
US2025748A
Cited
US2068890A
Cited
US2209037A
Cited
US2150032A
Cited
US2271598A
Cited
US2259472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-23 | 1950-12-23 | 1951-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-23 | 1954-12-23 | 1955-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-23 | 1958-12-23 | 1959-06-24 | $7700.00 | Window Closed / Lapsed |