US2190653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door-controlling means
Assignee: O N DAVIES
•
Filing: 1935-12-16
•
Granted: 1940-02-20
•
Expires: 1955-12-16
Abstract
No abstract record available.
Inventors
- 👤 Andrew C Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:01
CPC Classifications
E; E05; E05F; E05F5/00; E05F5/06; E05F5/10; E05F15/00; E05F15/50; E05Y; E05Y2201/00; E05Y2201/20; E05Y2201/21; E05Y2201/252; E05Y2201/254; E05Y2201/256; E05Y2201/262; E05Y2201/264; E05Y2400/00; E05Y2400/10; E05Y2400/44; E05Y2400/445
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) | 1943-02-19 | 1943-08-21 | 1944-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-02-19 | 1947-08-21 | 1948-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-02-19 | 1951-08-21 | 1952-02-20 | $7700.00 | Window Closed / Lapsed |