Patent US2668219A successfully refreshed from Google Patents.
US2668219A
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Article feeding apparatus
Assignee: AT&T Inc
•
Filing: 1949-01-19
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Granted: 1954-02-02
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Expires: 1969-01-19
Abstract
No abstract record available.
Inventors
- 👤 Rolf A F Sandberg
- 👤 Frank G Wikstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:32
CPC Classifications
H; H01; H01H; H01H11/00; H01H11/04; H01H11/041; H01H11/043; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5124; Y10T29/5127; Y10T29/5128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1041203A
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US1463505A
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US1703986A
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US1685542A
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US2069386A
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US2222605A
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US2468255A
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US2353480A
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US2417472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |