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US3515243A
Expired / Lapsed
US
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Lift device
Assignee: JOSEPH R ELLEN JR
•
Filing: 1969-05-06
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Granted: 1970-06-02
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Expires: 1989-05-06
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Ellen Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:10
CPC Classifications
E; E06; E06C; E06C5/00; E06C5/02; E06C5/04; E06C5/16; E06C5/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |