US2759536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable tensioning device for frameless window screens
Assignee: RY LOCK Co Ltd
•
Filing: 1954-04-19
•
Granted: 1956-08-21
•
Expires: 1974-04-19
Abstract
No abstract record available.
Inventors
- 👤 Jack H Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:13
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/52; E06B9/521
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1074584A
Cited
US2013500A
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US2185082A
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US2267462A
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US2678691A
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US2638163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |