Patent US2850825A successfully refreshed from Google Patents.
US2850825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display sign
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 08:51
CPC Classifications
G; G09; G09F; G09F19/00; G09F19/12; G09F19/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US386883A
Cited
US829492A
Cited
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 |