Patent US3209411A successfully refreshed from Google Patents.
US3209411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window construction
Assignee: Individual
•
Filing: 1962-09-07
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Granted: 1965-10-05
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Expires: 1982-09-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Wendell P Sprague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:23
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/42; E06B3/46; E06B3/4609; E06B3/4618
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
133 words
A WINDOW CONSTRUCTION COMPRISING A RECTANGULAR WINDOW FRAME HAVING A HEAD SECTION DEFINING A DOWNWARDLY OPEN CHANNEL, A SILL SECTION DEFINING AN UPWARDLY OPEN CHANNEL, AND JAMB SECTIONS JOINING SAID HEAD AND SILL SECTIONS, A MEETING RAIL JOINING SAID HEAD AND SILL SECTIONS OF THE FRAME INTERMEDIATE SAID JAMB SECTIONS, A HORIZONTALLY SLIDABLE, RECTANGULAR VENT SASH MOUNTED IN SAID FRAME AND COMPRISING A TOP RAIL PROJECTING INTO THE CHANNEL OF SAID HEAD SECTION, A BOTTOM RAIL PROJECTING INTO THE CHANNEL OF SAID SILL SECTION, AND STILES JOINING SAID TOP AND BOTTOM RAILS, SAID CHANNELS EACH HAVING INNER WALL SURFACES, OUTER WALL SURFACES AND BOTTOM SURFACES, SAID BOTTOM SURFACE OF THE SILL SECTION BEING INCLINED DOWNWARDLY AWAY FROM THE OUTER WALL SURFACE OF THE CHANNEL OF SAID SILL AND SAID RAILS BEING OF LESSER
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |