US2684176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure for gas tanks and the like
Assignee: DAVID A RUSSELL
•
Filing: 1951-03-08
•
Granted: 1954-07-20
•
Expires: 1971-03-08
Abstract
No abstract record available.
Inventors
- 👤 Lehr John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:33
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/04; B60K15/0406; B65; B65D; B65D55/00; B65D55/16; B65D55/165
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US361909A
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US903841A
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US1203797A
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US1201196A
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GB166291A
Cited
US1385304A
Cited
US1462438A
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US1448271A
Cited
US1622659A
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US2105709A
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US2185667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |