US3528692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window frame assembly
Assignee: North American Aluminum Corp
•
Filing: 1968-10-28
•
Granted: 1970-09-15
•
Expires: 1988-10-28
Abstract
No abstract record available.
Inventors
- 👤 Roger J De Vries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:10
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/96; E06B3/9616; E06B3/962; Y; Y10; Y10T; Y10T403/00; Y10T403/55; Y10T403/555
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US961992A
Cited
US1703092A
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US2546962A
Cited
US3183560A
Cited
US3196998A
Cited
US3203053A
Cited
US3334463A
Cited
US3321880A
Cited
US3352078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |