US2421690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reciprocable means for automatically moving a series of articles in tandem through a drying chamber
Assignee: AT&T Inc
•
Filing: 1944-09-08
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Granted: 1947-06-03
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Expires: 1964-09-08
Abstract
No abstract record available.
Inventors
- 👤 Vernon C Ensor
- 👤 Fred D Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:38
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/30; F; F26; F26B; F26B15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2101353A
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US2292284A
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US2347346A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-02 | 1950-12-02 | 1951-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-02 | 1954-12-02 | 1955-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-02 | 1958-12-02 | 1959-06-03 | $7700.00 | Window Closed / Lapsed |