US3168172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual-vent window
Assignee: Asco Window Corp
•
Filing: 1962-06-15
•
Granted: 1965-02-02
•
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 15:39
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)
US3043369A
Cited
US660587A
Cited
US1031124A
Cited
US1247637A
Cited
US2503453A
Cited
US2629768A
Cited
US2831553A
Cited
US2869955A
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 |