US2530700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure pipe joint
Assignee: JOINTS Inc
•
Filing: 1947-11-03
•
Granted: 1950-11-21
•
Expires: 1967-11-03
Abstract
No abstract record available.
Inventors
- 👤 Howard W Jewell
- 👤 William G Calder
- 👤 Raymond B Stringfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:47
CPC Classifications
F; F16; F16L; F16L25/00; F16L25/06; F16L25/065; F16L21/00; F16L21/002; F16L21/005; F16L49/00; F16L49/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US369574A
Cited
US1898623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |