Patent US3168172A successfully refreshed from Google Patents.
US3168172A
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US
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Dual-vent window
Assignee: Asco Window Corp
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Filing: 1962-06-15
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Granted: 1965-02-02
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Expires: 1982-06-15
Abstract
No abstract record available.
Inventors
- 👤 Alvarez Alfonso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:52
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/42; E06B3/44; E06B2003/4438; E06B2003/4453; E06B2003/4492
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
A WINDOW CONSTRUCTION COMPRISING A MAIN FRAME, AN UPPER MOVABLE SASH, A CENTRAL FIXED SASH AND A LOWER MOVABLE SASH MOUNTED IN SAID FRAME, AND MEANS FOR MOVING SAID UPPER AND LOWER SASHES IN OPPOSITE DIRECTIONS TO OPEN OR CLOSED POSITION, A PAIR OF SIMULTANEOUSLY MOVABLE SHADES EACH IN A SLIDABLE FRAME AND POSITIONED ADJACENT SAID CENTER SASH, SAID SHADES BEING MOVABLE INTO AND OUT OF POSITION TO COVER SAID UPPER AND LOWER MOVABLE SASHES.
References Cited (Backward Citations)
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US1031124A
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US1247637A
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-02 | 1968-08-03 | 1969-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-02 | 1972-08-03 | 1973-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-02 | 1976-08-03 | 1977-02-02 | $7700.00 | Window Closed / Lapsed |