US2631182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicating vent plug construction
Assignee: Richardson Co
•
Filing: 1948-08-26
•
Granted: 1953-03-10
•
Expires: 1968-08-26
Abstract
No abstract record available.
Inventors
- 👤 Gardner V Hall
- 👤 Shank Mcconnell
- 👤 Adolph F Krauss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:24
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/42; H01M10/48; H01M10/484; H01M50/00; H01M50/30; H01M50/308; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US461370A
Cited
US954423A
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US1581717A
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US1883971A
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US1978449A
Cited
US1991192A
Cited
US2141079A
Cited
US2469560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |