US2815544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window frame construction
Assignee: Individual
•
Filing: 1954-07-13
•
Granted: 1957-12-10
•
Expires: 1974-07-13
Abstract
No abstract record available.
Inventors
- 👤 Charles J Roos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:58
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/42; E06B3/44; E06B2003/4438; E06B2003/4446
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2046259A
Cited
US2169343A
Cited
US2217543A
Cited
US2564299A
Cited
US2585601A
Cited
US2638639A
Cited
US2719585A
Cited
US2740998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |