US2804297A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power unit and window system incorporating the same
Assignee: Trico Products Corp
•
Filing: 1952-10-17
•
Granted: 1957-08-27
•
Expires: 1972-10-17
Abstract
No abstract record available.
Inventors
- 👤 Emory W Lenz
- 👤 William C Riester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:01
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/50; E05F15/57; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/53; E05Y2900/55; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18992
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1659587A
Cited
US1754873A
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US1844873A
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US1816258A
Cited
US2089700A
Cited
US2205103A
Cited
US2391073A
Cited
US2400572A
Cited
US2530577A
Cited
US2555710A
Cited
US2633353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |