Patent US2146891A successfully refreshed from Google Patents.
US2901809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means of forming catch basins
Assignee: Individual
•
Filing: 1954-09-20
•
Granted: 1959-09-01
•
Expires: 1974-09-20
Abstract
No abstract record available.
Inventors
- 👤 Raymond E Ciesla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:06
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/28; B28B7/30; B28B13/00; B28B13/02; B28B13/028
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US541583A
Cited
US662266A
Cited
US695804A
Cited
US782797A
Cited
US1122977A
Cited
US1361315A
Cited
US1128150A
Cited
US1278240A
Cited
US1282200A
Cited
US1438784A
Cited
US1445907A
Cited
US1400927A
Cited
US1456539A
Cited
US1443459A
Cited
US1722038A
Cited
US1830713A
Cited
US1983757A
Cited
US1974752A
Cited
US2091385A
Cited
US2111063A
Cited
US2274773A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |