US3157098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of molding concrete and mold structure
Assignee: Individual
•
Filing: 1961-08-29
•
Granted: 1964-11-17
•
Expires: 1981-08-29
Abstract
No abstract record available.
Inventors
- 👤 Irvin H Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:29
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/50; E01C19/502; E01C19/506
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US289295A
Cited
US2191461A
Cited
US877870A
Cited
US1110295A
Cited
US1471074A
Cited
US1789829A
Cited
US1684624A
Cited
GB480927A
Cited
US2332166A
Cited
FR907704A
Cited
US2586912A
Cited
US2626444A
Cited
US2668342A
Cited
US2688174A
Cited
US2989794A
Cited
US2894310A
Cited
US2894307A
Cited
US3037433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |