Patent US3413946A successfully refreshed from Google Patents.
US3413946A
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US
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Spar buoy vessel
Assignee: Mobil Oil AS
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Filing: 1966-08-31
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Granted: 1968-12-03
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Expires: 1986-08-31
Abstract
No abstract record available.
Inventors
- 👤 Schultz Hans Udo Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:53
CPC Classifications
B; B63; B63B; B63B35/00; B63B35/44; B63B35/4406; B63B35/4413; E; E21; E21B; E21B7/00; E21B7/12; E21B7/128; B63B1/00; B63B1/02; B63B1/04; B63B2001/044; B63B2035/442
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |