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Patent US2606574A successfully refreshed from Google Patents.
US2606574A
Expired / Lapsed
US
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Reinforced high-temperature glass conduit
Assignee: AMERSIL Co Inc
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Filing: 1948-08-05
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Granted: 1952-08-12
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Expires: 1968-08-05
Abstract
No abstract record available.
Inventors
- 👤 Fred L Lefebvre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:08
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/10; F16L49/00; F16L49/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2377317A
Cited
US674928A
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US1939872A
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US2176837A
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US2313889A
Cited
US2366514A
Cited
US2408960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |