US2677560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing and self-draining means for pipe couplers
Assignee: RM Wade and Co
•
Filing: 1950-03-25
•
Granted: 1954-05-04
•
Expires: 1970-03-25
Abstract
No abstract record available.
Inventors
- 👤 Cornelius Gail
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:43
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/24; F16L37/244; F16L37/252; F16L41/00; F16L41/02; F16L41/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1153824A
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US1209374A
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US1671310A
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GB408990A
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US2082164A
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US2512098A
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US2465708A
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US2494855A
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US2517290A
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US2510477A
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US2541208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |