US3469852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leak clamp for bell and spigot pipe joint
Assignee: Smith Blair Inc
•
Filing: 1965-10-23
•
Granted: 1969-09-30
•
Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Telford L Smith
- 👤 Frank E Turner
- 👤 Walter M Smyk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:50
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/02; F16L21/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2009744A
Cited
US1984806A
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US2108151A
Cited
US2415753A
Cited
US2868576A
Cited
US2679410A
Cited
US2957717A
Cited
US2992022A
Cited
US3175851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |