Patent US2591448A successfully refreshed from Google Patents.
US2591448A
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US
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Assignee: —
•
Filing: —
•
Granted: 1952-04-01
•
Expires: 1969-04-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:35
CPC Classifications
G; G07; G07C; G07C1/00; G07C1/10; G07C1/12; G07C1/14; G07C1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1558743A
Cited
US1205082A
Cited
US1190217A
Cited
US1260705A
Cited
US1186541A
Cited
US1184721A
Cited
US1231108A
Cited
US1267510A
Cited
US1226058A
Cited
US1228290A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |