US2806308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Road display device
Assignee: Kaiser Aluminum and Chemical Corp
•
Filing: 1955-10-17
•
Granted: 1957-09-17
•
Expires: 1975-10-17
Abstract
No abstract record available.
Inventors
- 👤 Conrad O Curell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:05
CPC Classifications
G; G09; G09F; G09F15/00; G09F15/0006; G09F7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US957259A
Cited
US1167221A
Cited
US1407548A
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US1681830A
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US1853141A
Cited
US2116530A
Cited
US2557387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |