US2874812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Knock-down structural member with collapsible members
Assignee: Individual
•
Filing: 1955-06-28
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Granted: 1959-02-24
•
Expires: 1975-06-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Merton L Clevett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:26
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/38; E04C3/005; E04C3/02; E04C3/04; E04C3/10; E04C2003/0404; E04C2003/0408; E04C2003/0413; E04C2003/0426; E04C2003/043; E04C2003/0443; E04C2003/0465
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US233271A
Cited
US511472A
Cited
FR377715A
Cited
US1110157A
Cited
FR746138A
Cited
US2705015A
Cited
FR1052362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |