US2687017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submarine support column
Assignee: Ben C Gerwick Inc
•
Filing: 1949-03-11
•
Granted: 1954-08-24
•
Expires: 1969-03-11
Abstract
No abstract record available.
Inventors
- 👤 Ben C Gerwick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:39
CPC Classifications
E; E02; E02B; E02B17/00; E02B17/02; E02B17/025; E02B2017/0039; E02B2017/0056; E02B2017/0065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US670321A
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US1856312A
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US2552899A
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US2539695A
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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) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |