Patent US2354211A successfully refreshed from Google Patents.
US2077044A
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Marine derrick structure
Assignee: GEN PETROLEUM CORP OF CALIFORN
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Filing: 1934-08-17
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Granted: 1937-04-13
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Expires: 1954-08-17
Abstract
No abstract record available.
Inventors
- 👤 Victor F Grace
- 👤 Walter H Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:18
CPC Classifications
E; E02; E02B; E02B17/00; E21; E21B; E21B15/00; E21B15/02; E21B41/00; E21B41/0007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-04-12 | 1940-10-12 | 1941-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-04-12 | 1944-10-12 | 1945-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-04-12 | 1948-10-12 | 1949-04-13 | $7700.00 | Window Closed / Lapsed |