Patent US2797798A successfully refreshed from Google Patents.
US2797798A
Expired / Lapsed
US
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Tractor-type stock feed
Assignee: HALLDEN MACHINE Co
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Filing: 1955-08-19
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Granted: 1957-07-02
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Expires: 1975-08-19
Abstract
No abstract record available.
Inventors
- 👤 Hallden Karl William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:44
CPC Classifications
B; B21; B21C; B21C1/00; B21C1/16; B21C1/27; B21C1/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2288612A
Cited
US2281875A
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US2387446A
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US2642280A
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US2736425A
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US2696907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |