US2848761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window frame unit
Assignee: Individual
•
Filing: 1953-08-17
•
Granted: 1958-08-26
•
Expires: 1973-08-17
Abstract
No abstract record available.
Inventors
- 👤 Hahn Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:19
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/54; E06B3/58; E06B3/5878
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1404025A
Cited
US1528827A
Cited
US1809829A
Cited
US2122608A
Cited
US2354609A
Cited
US2340411A
Cited
US2570519A
Cited
US2577342A
Cited
US2637422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |