US2932875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unit for moulding concrete mix or the like
Assignee: Individual
•
Filing: 1955-08-01
•
Granted: 1960-04-19
•
Expires: 1975-08-01
Abstract
No abstract record available.
Inventors
- 👤 Butcher Ewen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:25
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/48; E01C19/4886; E01C19/4893
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US239449A
Cited
US286861A
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US288034A
Cited
US615085A
Cited
US1303566A
Cited
US772319A
Cited
US1606160A
Cited
FR713812A
Cited
GB397882A
Cited
GB688154A
Cited
US2727457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |