US2774998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding doors
Assignee: Individual
•
Filing: 1950-10-24
•
Granted: 1956-12-25
•
Expires: 1970-10-24
Abstract
No abstract record available.
Inventors
- 👤 Kiekert Friedrich Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:42
CPC Classifications
E; E05; E05D; E05D15/00; E05D15/06; E05D15/10; E05D15/1042; E05D15/1044; B; B60; B60J; B60J5/00; B60J5/04; B60J5/06; B60J5/062; B61; B61D; B61D19/00; B61D19/003; B61D19/008; E05D15/1021; E05D15/1023; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/42; E06B3/46; E06B3/4636; E05D2015/1018; E05D2015/1028; E05D2015/1031; E05D2015/1049; E05D2015/1055; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/51
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB390601A
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CH196920A
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GB532367A
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US2570563A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-25 | 1960-06-25 | 1960-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-25 | 1964-06-25 | 1964-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-25 | 1968-06-25 | 1968-12-25 | $7700.00 | Window Closed / Lapsed |