Patent US2833068A successfully refreshed from Google Patents.
US2833068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording and reminding device in disc form
Assignee: Individual
•
Filing: 1953-11-17
•
Granted: 1958-05-06
•
Expires: 1973-11-17
Abstract
No abstract record available.
Inventors
- 👤 Leon O Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:52
CPC Classifications
G; G09; G09B; G09B29/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US258897A
Cited
US485967A
Cited
US553996A
Cited
GB189819138A
Cited
US737049A
Cited
US734991A
Cited
US1874201A
Cited
US2288386A
Cited
GB565290A
Cited
US2549419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |