US2380794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tensioning and locking device for frameless window screens
Assignee: RY LOCK Co Ltd
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Filing: 1944-11-17
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Granted: 1945-07-31
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Expires: 1964-11-17
Abstract
No abstract record available.
Inventors
- 👤 David J Rust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:16
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/52; E06B9/521
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-07-30 | 1949-01-29 | 1949-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-07-30 | 1953-01-29 | 1953-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-07-30 | 1957-01-29 | 1957-07-31 | $7700.00 | Window Closed / Lapsed |