US2849780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inner corner forming unit for a concrete wall form
Assignee: Individual
•
Filing: 1955-05-03
•
Granted: 1958-09-02
•
Expires: 1975-05-03
Abstract
No abstract record available.
Inventors
- 👤 Hillberg Bror
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:34
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/001; E04G9/00; E04G9/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1032419A
Cited
GB152130A
Cited
US1636396A
Cited
GB273510A
Cited
GB395256A
Cited
US2584015A
Cited
US2763048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |