Patent US2422964A successfully refreshed from Google Patents.
US2422964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
hibbard
Assignee: —
•
Filing: —
•
Granted: 1947-06-24
•
Expires: 1964-06-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:18
CPC Classifications
—
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1239422A
Cited
US1265785A
Cited
US1655655A
Cited
US1506737A
Cited
US1862516A
Cited
US1861113A
Cited
US2080830A
Cited
US2061311A
Cited
US2239413A
Cited
US2249148A
Cited
US2317522A
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 |