Patent US1984134A successfully refreshed from Google Patents.
US3048958A
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US
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Vacuum breaker device for tank cars
Assignee: ConocoPhillips Co
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Filing: 1960-07-13
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Granted: 1962-08-14
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Expires: 1980-07-13
Abstract
No abstract record available.
Inventors
- 👤 Lester H Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:50
CPC Classifications
F; F16; F16K; F16K24/00; F16K24/06; B; B65; B65D; B65D90/00; B65D90/22; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86292; Y10T137/86324
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US924587A
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US1476618A
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US1601308A
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US2738796A
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US2830671A
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US2976950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |