Patent US2993492A successfully refreshed from Google Patents.
US2993492A
Expired / Lapsed
US
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Apparatus for strip treatment
Assignee: National Vulcanized Fibre Co
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Filing: 1955-11-02
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Granted: 1961-07-25
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Expires: 1975-11-02
Abstract
No abstract record available.
Inventors
- 👤 Gerald H Mains
- 👤 Leon W Mcginnis
- 👤 Joseph S Tatnall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:31
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/38; H05K3/382; H05K3/385; C; C23; C23C; C23C22/00; C23C22/73; C23G; C23G3/00; C23G3/02; C23G3/021; H05K2201/00; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/0355; H05K2203/00; H05K2203/03; H05K2203/0315
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2264885A
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US2334177A
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US2314369A
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US2619098A
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US2441308A
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US2649099A
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US2650599A
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US2622428A
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US2737386A
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US2726858A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |