US2507641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical advertising device for displaying articles
Assignee: Individual
•
Filing: 1946-12-26
•
Granted: 1950-05-16
•
Expires: 1966-12-26
Abstract
No abstract record available.
Inventors
- 👤 Matter Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:04
CPC Classifications
A; A47; A47F; A47F3/00; A47F3/08; G; G09; G09F; G09F11/00; G09F11/23
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US557948A
Cited
US1431019A
Cited
GB268753A
Cited
US1822907A
Cited
US2103175A
Cited
US2087187A
Cited
US2171054A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |