US2758353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for casting concrete beams
Assignee: CALUMET FLEXICORE Corp
•
Filing: 1953-11-20
•
Granted: 1956-08-14
•
Expires: 1973-11-20
Abstract
No abstract record available.
Inventors
- 👤 Carl R Carlson
- 👤 Archie R Gagne
- 👤 Eugene M Swenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:02
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/06; B28B23/00; B28B23/02; B28B23/04; B28B23/06; B28B7/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US792044A
Cited
US836277A
Cited
US1609701A
Cited
US1552748A
Cited
US1820892A
Cited
US1925733A
Cited
US2088120A
Cited
US2120881A
Cited
US2250020A
Cited
DE814577C
Cited
US2614309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |