US2995847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Road sign standards
Assignee: Individual
•
Filing: 1958-05-26
•
Granted: 1961-08-15
•
Expires: 1978-05-26
Abstract
No abstract record available.
Inventors
- 👤 Lowell C Carpenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:28
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/60; E01F9/688
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1135241A
Cited
US1726662A
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FR750562A
Cited
US1983174A
Cited
US1981268A
Cited
FR818475A
Cited
US2646239A
Cited
US2646237A
Cited
US2836385A
Cited
US2844897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |