Patent US2921667A successfully refreshed from Google Patents.
US2921667A
Expired / Lapsed
US
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Egg breaking machine
Assignee: Individual
•
Filing: 1957-03-05
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Granted: 1960-01-19
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Expires: 1977-03-05
Abstract
No abstract record available.
Inventors
- 👤 Charles H Willsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:42
CPC Classifications
A; A47; A47J; A47J43/00; A47J43/14; A47J43/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2704594A
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US2071859A
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US2187879A
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US2443188A
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US2485040A
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US2536057A
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US2575220A
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US2477031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |