US2208564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for operating doors
Assignee: Stanley Works
•
Filing: 1939-02-11
•
Granted: 1940-07-23
•
Expires: 1959-02-11
Abstract
No abstract record available.
Inventors
- 👤 Sheldon S Roby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:37
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/70; E05F15/73; E05F15/74
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) | 1943-07-23 | 1944-01-22 | 1944-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-07-23 | 1948-01-22 | 1948-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-07-23 | 1952-01-22 | 1952-07-23 | $7700.00 | Window Closed / Lapsed |