Patent US3490344A successfully refreshed from Google Patents.
US3490344A
Expired / Lapsed
US
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Pressure vessel
Assignee: AT&T Inc
•
Filing: 1967-07-10
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Granted: 1970-01-20
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Expires: 1987-07-10
Abstract
No abstract record available.
Inventors
- 👤 John Wesley Archer
- 👤 Francis Joseph Fuchs Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:07
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/004; B01; B01J; B01J3/00; B01J3/06; B30B11/001; B30B11/002; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49805
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2235070A
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US2365162A
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US2518787A
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US2840399A
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US2724368A
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US2934093A
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US3167204A
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US3224042A
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US3248879A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |