Patent US2656897A successfully refreshed from Google Patents.
Patent US3606419A successfully refreshed from Google Patents.
US3606419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molded plastic corner lock
Assignee: ASSOCIATES COMMERCIAL Corp
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Filing: 1969-06-18
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Granted: 1971-09-20
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Expires: 1989-06-18
Abstract
Abstract A CORNER LOCK FOR SCREEN FRAMES HAVING RIGHT ANGULARLY DISPOSED LEGS TELESCOPED INTO THE ENDS OF PERPENDICULAR TUBULAR SCREEN FRAME MEMBERS. THE APEX OF THE CORNER LOCK INCLUDES A PROJECTING SPACER EXTENDING DIAGONALLY ON THE TOP AND BOTTOM SURFACE AND EXTENDING VERTICALLY ON THE INNER AND OUTER SURFACES OF THE APEX TO ENGAGE THE ADJACENT ENDS OF THE SCREEN FRAME MEMBERS.
Inventors
- 👤 Perry L Virkler
- 👤 Thomas A Vaughn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:15
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/96; E06B3/964; E06B3/9641; E06B9/00; E06B9/52
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |