US3479831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and system for laying pipe under water
Assignee: Columbia Gas System Service Corp
•
Filing: 1967-09-20
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Granted: 1969-11-25
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Expires: 1987-09-20
Abstract
No abstract record available.
Inventors
- 👤 Walter Dorwin Teague Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:21
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/12; F16L55/128; F16L55/132; F16L55/134; F16L1/00; F16L1/12; F16L1/16; F16L1/161; F16L1/163; F16L55/115
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE23963E
Cited
US1220189A
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US3262275A
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US3136133A
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US3273346A
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US3307627A
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US3321925A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |