US2941447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Highway marker
Assignee: Individual
•
Filing: 1957-04-11
•
Granted: 1960-06-21
•
Expires: 1977-04-11
Abstract
No abstract record available.
Inventors
- 👤 Sr Gheen R Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:40
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/50; E01F9/553; E01F9/565; E01F9/571
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1496811A
Cited
US1785952A
Cited
US1986097A
Cited
US2073968A
Cited
US2224554A
Cited
US2192878A
Cited
US2157059A
Cited
GB648542A
Cited
GB690398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |