Patent US2842940A successfully refreshed from Google Patents.
US2842940A
Expired / Lapsed
US
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Personnel landing for offshore platforms
Assignee: HORACE WILLIAMS Co Inc W
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Filing: 1955-09-22
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Granted: 1958-07-15
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Expires: 1975-09-22
Abstract
No abstract record available.
Inventors
- 👤 Roy G Cappel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:47
CPC Classifications
E; E02; E02B; E02B17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US963061A
Cited
US1204644A
Cited
US1590317A
Cited
US1836453A
Cited
US2385824A
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US2715314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |