US2118950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure controlling device
Assignee: A B LEAVELLE
•
Filing: 1936-05-20
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Granted: 1938-05-31
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Expires: 1956-05-20
Abstract
No abstract record available.
Inventors
- 👤 Benjamin F Stannard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:15
CPC Classifications
E; E05; E05F; E05F3/00; E05F3/20; E05Y; E05Y2201/00; E05Y2201/60; E05Y2201/622; E05Y2201/638; E05Y2201/696; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
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) | 1941-05-30 | 1941-11-29 | 1942-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-05-30 | 1945-11-29 | 1946-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-05-30 | 1949-11-29 | 1950-05-31 | $7700.00 | Window Closed / Lapsed |