US2230744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support for elevator doors and the like
Assignee: WS Tyler Inc
•
Filing: 1938-07-22
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Granted: 1941-02-04
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Expires: 1958-07-22
Abstract
No abstract record available.
Inventors
- 👤 Ira R Disbro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:59
CPC Classifications
E; E05; E05D; E05D15/00; E05D15/06; E05D15/0621; E05D15/0626; E05D15/063; E05Y; E05Y2201/00; E05Y2201/60; E05Y2201/606; E05Y2201/61; E05Y2201/612; E05Y2201/614; E05Y2201/622; E05Y2201/628; E05Y2201/63; E05Y2201/688; E05Y2800/00; E05Y2800/40; E05Y2800/422; E05Y2900/00; E05Y2900/10; E05Y2900/104
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) | 1944-02-04 | 1944-08-05 | 1945-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-02-04 | 1948-08-05 | 1949-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-02-04 | 1952-08-05 | 1953-02-04 | $7700.00 | Window Closed / Lapsed |