Patent US3469283A successfully refreshed from Google Patents.
US3469283A
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Powder hopper for powder compacting press
Assignee: Wolverine Pentronix Inc
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Filing: 1966-02-24
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Granted: 1969-09-30
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Expires: 1986-02-24
Abstract
No abstract record available.
Inventors
- 👤 Paul Vinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:43
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/02; B22F3/03; B22F3/004; B30; B30B; B30B15/00; B30B15/30; B30B15/302; B30B15/304; C; C03; C03B; C03B19/00; C03B19/06; C03B19/10; C03B19/1005; C03B19/1035; H; H01; H01F; H01F41/00; H01F41/02; H01F41/0253; H01F41/0266
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) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |