Patent US3515414A successfully refreshed from Google Patents.
US3515414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible sectional pipe lines
Assignee: Interspace Corp
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Filing: 1968-12-16
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Granted: 1970-06-02
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Expires: 1988-12-16
Abstract
No abstract record available.
Inventors
- 👤 Casimir K Kowalewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:05
CPC Classifications
F; F16; F16L; F16L1/00; F16L1/12; F16L1/16; F16L1/161; F16L1/165; F16L25/00; F16L25/0027; F16L27/00; F16L27/02; F16L27/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US290196A
Cited
FR926966A
Cited
US2473502A
Cited
US2521127A
Cited
US2955850A
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US3273917A
Cited
US3353848A
Cited
US3427051A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |