US2642645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Form for concrete constructions
Assignee: Individual
•
Filing: 1948-09-13
•
Granted: 1953-06-23
•
Expires: 1968-09-13
Abstract
No abstract record available.
Inventors
- 👤 Charles A Commet
- 👤 Chester F Merriman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:21
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/84; E04B2/842; E04B2/845
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1003591A
Cited
US1030480A
Cited
US1488726A
Cited
US1730533A
Cited
US1852049A
Cited
US2007689A
Cited
US2091542A
Cited
US2109009A
Cited
US2187959A
Cited
US2251499A
Cited
US2262899A
Cited
US2309147A
Cited
US2318058A
Cited
US2476135A
Cited
US2455455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |