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US2379990A
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Pipe coupling
Assignee: Johns Manville Corp
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Filing: 1942-09-19
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Granted: 1945-07-10
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Expires: 1962-09-19
Abstract
No abstract record available.
Inventors
- 👤 Rembert Ernest Wayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:52
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/10; F16L13/11; F16L13/113; Y; Y10; Y10S; Y10S285/00; Y10S285/915; Y10S285/919
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) | 1948-07-09 | 1949-01-08 | 1949-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-07-09 | 1953-01-08 | 1953-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-07-09 | 1957-01-08 | 1957-07-10 | $7700.00 | Window Closed / Lapsed |