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US2422009A
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Self-sealing ring-joint gasket
Assignee: Johns Manville Corp
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Filing: 1945-11-05
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Granted: 1947-06-10
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Expires: 1965-11-05
Abstract
No abstract record available.
Inventors
- 👤 Margie C Goetze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:50
CPC Classifications
F; F16; F16L; F16L17/00; F16L17/06; F16L17/08; Y; Y10; Y10S; Y10S277/00; Y10S277/926; Y10S285/00; Y10S285/917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US836950A
Cited
US1715854A
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DE614140C
Cited
US1904250A
Cited
US2291709A
Cited
US2401923A
Cited
US2384672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-09 | 1950-12-09 | 1951-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-09 | 1954-12-09 | 1955-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-09 | 1958-12-09 | 1959-06-10 | $7700.00 | Window Closed / Lapsed |