US2840807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Numeral display device
Assignee: Toledo Scale Corp
•
Filing: 1954-02-25
•
Granted: 1958-06-24
•
Expires: 1974-02-25
Abstract
No abstract record available.
Inventors
- 👤 Francis C Todd
- 👤 John L Courtright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:19
CPC Classifications
G; G06; G06M; G06M1/00; G06M1/08; G06M1/10; G06M1/102
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2733008A
Cited
US983190A
Cited
US2074066A
Cited
US1991190A
Cited
US2241548A
Cited
US2617870A
Cited
US2682995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |