Patent US3438409A successfully refreshed from Google Patents.
US3438409A
Expired / Lapsed
US
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Apparatus for transferring antiknock fluid
Assignee: Ethyl Corp
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Filing: 1966-02-18
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Granted: 1969-04-15
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Expires: 1986-02-18
Abstract
No abstract record available.
Inventors
- 👤 Robert S Bruce
- 👤 John C Watt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:51
CPC Classifications
B; B67; B67D; B67D7/00; B67D7/02; B67D7/0277; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3109
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2144613A
Cited
US2230405A
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US2850439A
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US3011638A
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US3045716A
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US3289918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |