Patent US2912243A successfully refreshed from Google Patents.
US2912243A
Expired / Lapsed
US
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Pile elevating mechanism and control therefor
Assignee: Harris Corp
•
Filing: 1955-12-16
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Granted: 1959-11-10
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Expires: 1975-12-16
Abstract
No abstract record available.
Inventors
- 👤 Kenneth H Gulick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:20
CPC Classifications
B; B65; B65H; B65H1/00; B65H1/08; B65H1/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1806866A
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US1243677A
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US1763598A
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US1784335A
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US2074330A
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US2183128A
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US2393010A
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US2450214A
Cited
US2746753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |