US2581624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Early factor mechanism
Assignee: —
•
Filing: —
•
Granted: 1952-01-08
•
Expires: 1969-01-08
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:43
CPC Classifications
G; G06; G06C; G06C15/00; G06C15/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1609335A
Cited
US1912874A
Cited
US2374333A
Cited
US2467441A
Cited
US1484237A
Cited
US1874805A
Cited
US2269931A
Cited
US2087182A
Cited
US2303692A
Cited
US2525423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |