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US3473338A
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Submarine pipeline caisson
Assignee: WYLIE B PEARCE
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Filing: 1968-10-29
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Granted: 1969-10-21
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Expires: 1988-10-29
Abstract
No abstract record available.
Inventors
- 👤 Wylie B Pearce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:53
CPC Classifications
B; B63; B63B; B63B19/00; B63B19/08; B63B43/00; B63B43/24; B63B43/32; B63C; B63C11/00; B63C11/34; B63C11/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2667751A
Cited
US2812641A
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US2931187A
Cited
US2939292A
Cited
US3328970A
Cited
US3407612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |