US2677908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminated rotating sign
Assignee: Individual
•
Filing: 1950-07-10
•
Granted: 1954-05-11
•
Expires: 1970-07-10
Abstract
No abstract record available.
Inventors
- 👤 Averett A Clevenger
- 👤 Gordon H Clevenger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:00
CPC Classifications
G; G09; G09F; G09F11/00; G09F11/02; G09F11/06; G09F13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US878146A
Cited
US926781A
Cited
US1513521A
Cited
US1700328A
Cited
US1739592A
Cited
GB447078A
Cited
US2141344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |