US2467370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure seal
Assignee: Individual
•
Filing: 1945-11-13
•
Granted: 1949-04-19
•
Expires: 1965-11-13
Abstract
No abstract record available.
Inventors
- 👤 Niels A Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:05
CPC Classifications
F; F16; F16L; F16L27/00; F16L27/02; F16L27/04; F16L27/06; F16L27/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE123510C
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US122614A
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US386547A
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US397981A
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GB190712857A
Cited
US910687A
Cited
US1263777A
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US1563161A
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US1906575A
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US1959259A
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GB484838A
Cited
US2370964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-18 | 1952-10-18 | 1953-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-18 | 1956-10-18 | 1957-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-18 | 1960-10-18 | 1961-04-19 | $7700.00 | Window Closed / Lapsed |