US2980947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller unit for sliding door panels
Assignee: Rylock Co Ltd
•
Filing: 1959-10-16
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Granted: 1961-04-25
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Expires: 1979-10-16
Abstract
No abstract record available.
Inventors
- 👤 Rust David Jordan
- 👤 Jack H Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:24
CPC Classifications
E; E05; E05D; E05D15/00; E05D15/06; E05D15/0621; E05D15/066; E05D15/0665; E05D15/0669; E05Y; E05Y2201/00; E05Y2201/60; E05Y2201/622; E05Y2201/696; 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) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |