Patent US2708523A successfully refreshed from Google Patents.
Patent US3321885A successfully refreshed from Google Patents.
US3321885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screen frame and corner construction
Assignee: Individual
•
Filing: 1965-06-21
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Granted: 1967-05-30
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Expires: 1985-06-21
Abstract
No abstract record available.
Inventors
- 👤 Clifford W Pratt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:07
CPC Classifications
A; A47; A47G; A47G1/00; A47G1/06; A47G1/0605; E; E06; E06B; E06B9/00; E06B9/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
IN A METAL SCREEN FRAME OR THE LIKE, A ROLLED TUBULAR BODY HAVING A SEAM COMPRISING FIRST AND SECOND LONGTUDINAL PORTIONS CRIMPED TOGETHER, ONE OF SAID LONGITUDINAL PORTIONS HAVING SERRATIONS THEREALONG ENGAGING THE SECOND LONGITUDINAL PORTION WHERE SAID PORTIONS ARE CRIMPED, THE FIRST OF SAID LONGITUDINAL PORTIONS BEING USHAPED TRANSVERSELY OF AND OFFSET FROM SAID HOLLOW TUBULAR BODY TO PROVIDE A SPLINE GROOVE HAVING EXPOSED WALL FACES AND HIDDEN WALL FACES, A FIRST HIDDEN WALL FACE DEFINING PART OF THE INTERIOR OF THE TUBULAR BODY AND HAVING SERRATIONS TO ENGAGE A SCREEN FRAME CORNER CONNECTOR, A SECOND HIDDEN WALL FACE AT AN ANGLE TO SAID FIRST HIDDEN WALL FACE AND HAVING SERRATIONS, SAID SECOND LONGITUDINAL PORTION BEING CRIMPED AGAINST THE SERRATIONS OF SAID SECOND HIDDEN WALL FACE.
Claim 2
Dependent Claim
127 words
IN A METAL SCREEN FRAME OR THE LIKE, A ROLLED TUBULAR BODY HAVING A SEAM COMPRISING FIRST AND SECOND LONGTUDINAL PORTIONS CRIMPED TOGETHER, ONE OF SAID LONGITUDINAL PORTIONS HAVING SERRATIONS THEREALONG ENGAGING THE SECOND LONGITUDINAL PORTION WHERE SAID PORTIONS ARE CRIMPED, THE FIRST OF SAID LONGITUDINAL PORTIONS BEING USHAPED TRANSVERSELY OF AND OFFSET FROM SAID HOLLOW TUBULAR BODY TO PROVIDE A SPLINE GROOVE HAVING EXPOSED WALL FACES AND HIDDEN WALL FACES, A FIRST HIDDEN WALL FACE DEFINING PART OF THE INTERIOR OF THE TUBULAR BODY AND HAVING SERRATIONS TO ENGAGE A SCREEN FRAME CORNER CONNECTOR, A SECOND HIDDEN WALL FACE AT AN ANGLE TO SAID FIRST HIDDEN WALL FACE AND HAVING SERRATIONS, SAID SECOND LONGITUDINAL PORTION BEING CRIMPED AGAINST THE SERRATIONS OF SAID SECOND HIDDEN WALL FACE.
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) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |