US2686669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roto-adjuster for casement windows
Assignee: Detroit Steel Products Co Inc
•
Filing: 1951-12-10
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Granted: 1954-08-17
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Expires: 1971-12-10
Abstract
No abstract record available.
Inventors
- 👤 Robert O Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:47
CPC Classifications
E; E05; E05F; E05F11/00; E05F11/02; E05F11/08; E05F11/10; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18792; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19828
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |