Patent US82844A successfully refreshed from Google Patents.
Patent US2987937A successfully refreshed from Google Patents.
US2987937A
Expired / Lapsed
US
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Window operating mechanism
Assignee: Eaton Corp
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Filing: 1958-06-10
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Granted: 1961-06-13
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Expires: 1978-06-10
Abstract
No abstract record available.
Inventors
- 👤 William E Sala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:48
CPC Classifications
E; E05; E05F; E05F11/00; E05F11/38; E05F11/48; E05F11/481; E05F11/483; E05F11/486; E05F15/00; E05F15/60; E05F15/603; E05F15/665; E05F15/689; E05Y; E05Y2600/00; E05Y2600/50; E05Y2800/00; E05Y2800/69; E05Y2800/692; E05Y2900/00; E05Y2900/50; E05Y2900/53; E05Y2900/55; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18792; Y10T74/18832; Y10T74/18848; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19828; Y10T74/20; Y10T74/20396; Y10T74/20474; Y10T74/2048; Y10T74/21; Y10T74/2186
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1707362A
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US2403075A
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US2539782A
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US2649337A
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US2628090A
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US2860873A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |