US2678690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tension screen with wooden crossbars
Assignee: RY LOCK Co Ltd
•
Filing: 1951-06-11
•
Granted: 1954-05-18
•
Expires: 1971-06-11
Abstract
No abstract record available.
Inventors
- 👤 Rust David Jordan
- 👤 Jack H Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:41
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/52; E06B9/521
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
CH33874A
Cited
US885673A
Cited
US948433A
Cited
US1254865A
Cited
US1411784A
Cited
US1711670A
Cited
US1970256A
Cited
US2029453A
Cited
US2372912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-17 | 1957-11-16 | 1958-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-17 | 1961-11-16 | 1962-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-17 | 1965-11-16 | 1966-05-18 | $7700.00 | Window Closed / Lapsed |