US2435221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Index guide
Assignee: ROCKWELL BARNES Co
•
Filing: 1945-02-05
•
Granted: 1948-02-03
•
Expires: 1965-02-05
Abstract
No abstract record available.
Inventors
- 👤 Charles E Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:14
CPC Classifications
B; B42; B42F; B42F19/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190408905A
Cited
US1294948A
Cited
US1876208A
Cited
US1793485A
Cited
US1961079A
Cited
US2052623A
Cited
US2022895A
Cited
US2346187A
Cited
US2248355A
Cited
US2288013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-02 | 1951-08-04 | 1952-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-02 | 1955-08-04 | 1956-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-02 | 1959-08-04 | 1960-02-03 | $7700.00 | Window Closed / Lapsed |