US2706842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rigid jack and separate board construction forms
Assignee: Individual
•
Filing: 1951-11-08
•
Granted: 1955-04-26
•
Expires: 1971-11-08
Abstract
No abstract record available.
Inventors
- 👤 Keffer Cecil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:51
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/06; E04G11/20; E04G11/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US699625A
Cited
US947160A
Cited
US965805A
Cited
US1041991A
Cited
US1240436A
Cited
US1511087A
Cited
US1810777A
Cited
FR915187A
Cited
FR968634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-25 | 1958-10-25 | 1959-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-25 | 1962-10-25 | 1963-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-25 | 1966-10-25 | 1967-04-26 | $7700.00 | Window Closed / Lapsed |