Patent US2156813A successfully refreshed from Google Patents.
Patent US2586603A successfully refreshed from Google Patents.
US2586603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic recording and controlling apparatus
Assignee: Leeds and Northrup Co
•
Filing: 1949-08-08
•
Granted: 1952-02-19
•
Expires: 1969-08-08
Abstract
No abstract record available.
Inventors
- 👤 Jr George E Beggs
- 👤 Edward W Yetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:42
CPC Classifications
G; G05; G05B; G05B11/00; G05B11/01; G05B11/012; G05B11/013
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2203689A
Cited
US2424568A
Cited
US2399695A
Cited
US2424569A
Cited
US2385447A
Cited
US2376746A
Cited
US2414317A
Cited
US2476496A
Cited
US2438288A
Cited
US2447321A
Cited
US2492779A
Cited
US2529065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |