US3425688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic conveyor
Assignee: Ropak Manufacturing Co Inc
•
Filing: 1966-12-23
•
Granted: 1969-02-04
•
Expires: 1986-12-23
Abstract
No abstract record available.
Inventors
- 👤 Hugh Ross
- 👤 Franklin E Parke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:11
CPC Classifications
B; B21; B21D; B21D43/00; B21D43/02; B21D43/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1809076A
Cited
US2228913A
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US2839651A
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US3003460A
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US2901094A
Cited
US3162297A
Cited
US3179241A
Cited
US3203531A
Cited
US3224757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |