Patent US3020068A successfully refreshed from Google Patents.
US3020068A
Expired / Lapsed
US
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Coupling of lined pipe and methods
Assignee: Victaulic Co
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Filing: 1959-02-18
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Granted: 1962-02-06
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Expires: 1979-02-18
Abstract
No abstract record available.
Inventors
- 👤 Frank X Costanzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:43
CPC Classifications
F; F16; F16L; F16L17/00; F16L17/02; F16L17/04; F16L21/00; F16L21/02; F16L21/022; F16L58/00; F16L58/18; F16L58/187; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49885; Y10T29/49888
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US227412A
Cited
US1510243A
Cited
GB322834A
Cited
US1967467A
Cited
US2001204A
Cited
US2219576A
Cited
US2613958A
Cited
US2608501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |