US2444705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable shoring support
Assignee: Individual
•
Filing: 1946-03-22
•
Granted: 1948-07-06
•
Expires: 1966-03-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Keffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:29
CPC Classifications
E; E21; E21D; E21D15/00; E21D15/58; E21D15/581; E04; E04G; E04G25/00; E04G25/04; E04G25/06; E04G25/066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1570226A
Cited
US1757312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-06 | 1952-01-05 | 1952-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-06 | 1956-01-05 | 1956-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-06 | 1960-01-05 | 1960-07-06 | $7700.00 | Window Closed / Lapsed |