US2809030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window operator
Assignee: Individual
•
Filing: 1955-11-22
•
Granted: 1957-10-08
•
Expires: 1975-11-22
Abstract
No abstract record available.
Inventors
- 👤 Floyd R Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:26
CPC Classifications
E; E05; E05F; E05F11/00; E05F11/02; E05F11/32; E05F11/54; E05Y; E05Y2201/00; E05Y2201/60; E05Y2201/622; E05Y2201/676; E05Y2800/00
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |