US2329280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical window operator and tension limiting device
Assignee: LUNKEN JUST WINDOW CORP
•
Filing: 1939-09-20
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Granted: 1943-09-14
•
Expires: 1959-09-20
Abstract
No abstract record available.
Inventors
- 👤 Edmund H Lunken
- 👤 George A Just
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:09
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/42; E06B3/44; E06B3/4423; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/665; E05Y; E05Y2201/00; E05Y2201/20; E05Y2201/21; E05Y2201/40; E05Y2201/43; E05Y2201/434
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-09-13 | 1947-03-15 | 1947-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-09-13 | 1951-03-15 | 1951-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-09-13 | 1955-03-15 | 1955-09-14 | $7700.00 | Window Closed / Lapsed |