US2511239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screen cloth anchoring and tensioning means
Assignee: Simplicity Engineering Inc
•
Filing: 1947-01-13
•
Granted: 1950-06-13
•
Expires: 1967-01-13
Abstract
No abstract record available.
Inventors
- 👤 George W Behnke
- 👤 Russell G Westcott
- 👤 Sandula John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:05
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/46; B07B1/48; B07B1/49
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1310305A
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US780826A
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US1332685A
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US1353549A
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US1713143A
Cited
US1810146A
Cited
US2136950A
Cited
US2190993A
Cited
US2338523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-12 | 1953-12-12 | 1954-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-12 | 1957-12-12 | 1958-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-12 | 1961-12-12 | 1962-06-13 | $7700.00 | Window Closed / Lapsed |