Patent US6313758B1 successfully refreshed from Google Patents.
US2490628A
Expired / Lapsed
US
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Motor-driven leveling support
Assignee: Honeywell Inc
•
Filing: 1942-09-23
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Granted: 1949-12-06
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Expires: 1962-09-23
Abstract
No abstract record available.
Inventors
- 👤 Siegfried G Isserstedt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:45
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/64
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) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |