US2475890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formwork for molding concrete columns and the like
Assignee: Individual
•
Filing: 1946-09-04
•
Granted: 1949-07-12
•
Expires: 1966-09-04
Abstract
No abstract record available.
Inventors
- 👤 Hamilton William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:44
CPC Classifications
E; E04; E04G; E04G13/00; E04G13/02; E04G17/00; E04G17/004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1318427A
Cited
US975615A
Cited
US1670338A
Cited
US1871919A
Cited
US1936666A
Cited
US2206493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-11 | 1953-01-10 | 1953-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-11 | 1957-01-10 | 1957-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-11 | 1961-01-10 | 1961-07-12 | $7700.00 | Window Closed / Lapsed |