Patent US3390532A successfully refreshed from Google Patents.
US3390532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for laying pipelines
Assignee: Brown and Root Inc
•
Filing: 1965-05-21
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Granted: 1968-07-02
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Expires: 1985-05-21
Abstract
No abstract record available.
Inventors
- 👤 Lawrence Joseph Benton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:50
CPC Classifications
H; H02; H02G; H02G1/00; H02G1/06; H02G1/10; B; B63; B63B; B63B35/00; B63B35/03; F; F16; F16L; F16L1/00; F16L1/12; F16L1/20; F16L1/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735270A
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US2910835A
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FR1292209A
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US3262275A
Cited
GB925432A
Cited
FR1272576A
Cited
FR78610E
Cited
FR1292291A
Cited
US3273346A
Cited
US3214921A
Cited
US3237438A
Cited
US3280571A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |