Patent US2491791A successfully refreshed from Google Patents.
US2491791A
Expired / Lapsed
US
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Protective closure for automobile gas tank fillers
Assignee: Individual
•
Filing: 1947-07-05
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Granted: 1949-12-20
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Expires: 1967-07-05
Abstract
No abstract record available.
Inventors
- 👤 Perry E Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:40
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/04; B60K15/05; E; E05; E05B; E05B53/00; E05B53/003; E05B53/005; Y; Y10; Y10S; Y10S16/00; Y10S16/02; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/554
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1480274A
Cited
US2035895A
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US2151249A
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US2197328A
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US2258812A
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US2282443A
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US2417324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-19 | 1953-06-20 | 1953-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-19 | 1957-06-20 | 1957-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-19 | 1961-06-20 | 1961-12-20 | $7700.00 | Window Closed / Lapsed |