US2850825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1952-10-07
•
Granted: 1958-09-09
•
Expires: 1972-10-07
Abstract
No abstract record available.
Inventors
- 👤 Paul R Grants
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:41
CPC Classifications
G; G09; G09F; G09F19/00; G09F19/12; G09F19/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US386883A
Cited
US829492A
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FR584277A
Cited
US1740674A
Cited
US1967658A
Cited
US2061309A
Cited
US2116542A
Cited
US2482947A
Cited
US2694228A
Cited
US2607142A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |