Patent US3474874A successfully refreshed from Google Patents.
US3474874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weighing system
Assignee: Hi Speed Checkweigher Co Inc
•
Filing: 1967-06-21
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Granted: 1969-10-28
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Expires: 1987-06-21
Abstract
No abstract record available.
Inventors
- 👤 Charles R Pettis Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:26
CPC Classifications
G; G01; G01G; G01G21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2751180A
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Cited
US3259199A
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US3117639A
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US3164217A
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US3254728A
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US3291233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |