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US2578951A
Expired / Lapsed
US
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Change maker
Assignee: Individual
•
Filing: 1946-06-27
•
Granted: 1951-12-18
•
Expires: 1966-06-27
Abstract
No abstract record available.
Inventors
- 👤 Charles C Shaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:37
CPC Classifications
G; G07; G07F; G07F5/00; G07F5/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE85972C
Cited
US123607A
Cited
US884247A
Cited
GB192714A
Cited
US1961537A
Cited
US2010966A
Cited
US2143790A
Cited
US2277195A
Cited
US2309873A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |