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US3463271A
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Offshore elevator
Assignee: Alaska Elevator Corp
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Filing: 1967-09-11
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Granted: 1969-08-26
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Expires: 1987-09-11
Abstract
No abstract record available.
Inventors
- 👤 Donald L St Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:58
CPC Classifications
E; E02; E02B; E02B17/00; E02B17/0034; B; B63; B63B; B63B23/00; B63B23/30; B63B23/40; B63B23/48; E04; E04G; E04G3/00; E04G3/24; E04G3/243; E04G3/28; E04G3/30; E04G3/32; E04G2003/286
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) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |