Patent US3877172A successfully refreshed from Google Patents.
Patent US2637434A successfully refreshed from Google Patents.
US2637434A
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Belt type gravimetric feeder
Assignee: OMEGA MACHINE Co
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Filing: 1946-07-03
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Granted: 1953-05-05
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Expires: 1966-07-03
Abstract
No abstract record available.
Inventors
- 👤 Lyndus E Harper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:25
CPC Classifications
G; G01; G01G; G01G11/00; G01G11/08; G01G11/083; G01G11/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2377765A
Cited
US1125705A
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US1777670A
Cited
DE611824C
Cited
GB436658A
Cited
US2258457A
Cited
US2546866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |