Patent US2521075A successfully refreshed from Google Patents.
US2521075A
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US
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Feeding and stacking machine
Assignee: Maxson Automatic Machinery Co
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Filing: 1947-05-17
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Granted: 1950-09-05
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Expires: 1967-05-17
Abstract
No abstract record available.
Inventors
- 👤 Louis L Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:13
CPC Classifications
B; B65; B65H; B65H31/00; B65H31/32; B65H2301/00; B65H2301/40; B65H2301/42; B65H2301/422; B65H2301/4225; B65H2301/42256; B65H2405/00; B65H2405/30; B65H2405/32; B65H2405/323; B65H2405/3231
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-04 | 1954-03-06 | 1954-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-04 | 1958-03-06 | 1958-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-04 | 1962-03-06 | 1962-09-05 | $7700.00 | Window Closed / Lapsed |