US2448031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetically sealed joint
Assignee: Individual
•
Filing: 1944-10-26
•
Granted: 1948-08-31
•
Expires: 1964-10-26
Abstract
No abstract record available.
Inventors
- 👤 Hugh B Johnson
- 👤 Le Roy L Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:25
CPC Classifications
B; B65; B65D; B65D9/00; B65D9/32; B65D9/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US234186A
Cited
US1253764A
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US2177233A
Cited
US1986057A
Cited
US2201482A
Cited
GB507942A
Cited
GB524251A
Cited
US2219409A
Cited
US2376593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-31 | 1952-03-01 | 1952-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-31 | 1956-03-01 | 1956-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-31 | 1960-03-01 | 1960-08-31 | $7700.00 | Window Closed / Lapsed |