US3233922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe joint
Assignee: CAST IRON SOIL PIPE INST
•
Filing: 1963-07-29
•
Granted: 1966-02-08
•
Expires: 1983-07-29
Abstract
No abstract record available.
Inventors
- 👤 Evans Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:36
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/002; F16L21/005; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1412; Y10T24/1427; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19819
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US131843A
Cited
US607018A
Cited
US1833776A
Cited
GB580186A
Cited
FR1011740A
Cited
US2890899A
Cited
US2958549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |