Patent US2570563A successfully refreshed from Google Patents.
US2570563A
Expired / Lapsed
US
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Operating means for sliding doors
Assignee: Lockheed Martin Corp
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Filing: 1945-04-16
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Granted: 1951-10-09
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Expires: 1965-04-16
Abstract
No abstract record available.
Inventors
- 👤 Kreimendahl Rodney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:06
CPC Classifications
E; E05; E05D; E05D15/00; E05D15/06; E05D15/10; E05D2015/1028; E05D2015/1031; E05D2015/1034; E05D15/1042; E05D2015/1049; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
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) | 1954-10-08 | 1955-04-09 | 1955-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-08 | 1959-04-09 | 1959-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-08 | 1963-04-09 | 1963-10-09 | $7700.00 | Window Closed / Lapsed |