US3491660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable,easy-to-assemble and easy-to-mount curb
Assignee: Individual
•
Filing: 1967-10-25
•
Granted: 1970-01-27
•
Expires: 1987-10-25
Abstract
No abstract record available.
Inventors
- 👤 Pauline Kwasney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:06
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/50; E01F9/535; E01F9/541; E01F9/60; E01F9/623; E01F9/646
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US207155A
Cited
US1599975A
Cited
US2136709A
Cited
US2153392A
Cited
US2145936A
Cited
US2851935A
Cited
US2841059A
Cited
US3040636A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |