Patent US2827764A successfully refreshed from Google Patents.
US2827764A
Expired / Lapsed
US
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Power system for a drop hammer
Assignee: LA Young Spring and Wire Corp
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Filing: 1955-12-13
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Granted: 1958-03-25
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Expires: 1975-12-13
Abstract
No abstract record available.
Inventors
- 👤 Wayne W Simmonds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:02
CPC Classifications
E; E01; E01C; E01C23/00; E01C23/06; E01C23/12; E01C23/122; E01C23/124
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1290203A
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US1619474A
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US1816829A
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US1822690A
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GB485617A
Cited
US2548439A
Cited
US2669840A
Cited
US2659583A
Cited
GB729941A
Cited
US2729224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |