US3480302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal lock ring bell and spigot joint
Assignee: Mcwane Cast Iron Pipe Co
•
Filing: 1966-02-24
•
Granted: 1969-11-25
•
Expires: 1986-02-24
Abstract
No abstract record available.
Inventors
- 👤 Warren C Jeffery
- 👤 Sidney P Teague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:11
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/08; F16L37/00; F16L37/08; F16L37/084; F16L37/092; F16L37/0927
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US239827A
Cited
GB190019640A
Cited
FR448328A
Cited
US1830973A
Cited
US1939936A
Cited
US2205910A
Cited
FR901755A
Cited
US2684860A
Cited
US2926701A
Cited
BE553325A
Cited
US3273919A
Cited
US3257719A
Cited
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 |