Patent US2677945A successfully refreshed from Google Patents.
US2677945A
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US
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Transportation of natural gas
Assignee: Chemical Foundation Inc
•
Filing: 1948-01-21
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Granted: 1954-05-11
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Expires: 1968-01-21
Abstract
No abstract record available.
Inventors
- 👤 Miller Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:58
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0228; F25J3/0233; F25J3/0204; F25J3/0209; F25J3/0238; F25J3/0257; F25J2200/00; F25J2200/02; F25J2200/50; F25J2200/74; F25J2230/00; F25J2230/20; F25J2230/60; F25J2270/00; F25J2270/04; F25J2270/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US668197A
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US1497546A
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US1530461A
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US1602535A
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US1521115A
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US2122238A
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US2475957A
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US2500118A
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US2487147A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |