US1979470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of joining bell and spigot pipe sections
Assignee: Gladding Mcbean and Co
•
Filing: 1930-05-10
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Granted: 1934-11-06
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Expires: 1950-05-10
Abstract
No abstract record available.
Inventors
- 👤 James C Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:48
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/10; F16L13/11; Y; Y10; Y10S; Y10S277/00; Y10S277/922; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49945; Y10T29/49947; Y10T29/49948; Y10T29/49952; Y10T29/49954; Y10T29/49966; Y10T29/4997
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1937-11-05 | 1938-05-07 | 1938-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-11-05 | 1942-05-07 | 1942-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-11-05 | 1946-05-07 | 1946-11-06 | $7700.00 | Window Closed / Lapsed |