US2984075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal and external jack assembly for telescopic caissons
Assignee: De Long Corp
•
Filing: 1956-05-15
•
Granted: 1961-05-16
•
Expires: 1976-05-15
Abstract
No abstract record available.
Inventors
- 👤 George E Suderow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:30
CPC Classifications
E; E02; E02B; E02B17/00; E02B17/04; E02B17/08; E02B17/0809; E02B17/0836; E02B17/0872
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |