Patent US4294453A successfully refreshed from Google Patents.
Patent US2594566A successfully refreshed from Google Patents.
US2594566A
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US
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Assignee: —
•
Filing: —
•
Granted: 1952-04-29
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Expires: 1969-04-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:44
CPC Classifications
G; G06; G06C; G06C1/00; G09; G09B; G09B19/00; G09B19/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US39904A
Cited
US176426A
Cited
US177928A
Cited
US546748A
Cited
US550123A
Cited
US1354778A
Cited
US2450668A
Cited
US1171535A
Cited
US1283488A
Cited
FR603660A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-29 | 1955-10-29 | 1956-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-29 | 1959-10-29 | 1960-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-29 | 1963-10-29 | 1964-04-29 | $7700.00 | Window Closed / Lapsed |