Patent US1950419A successfully refreshed from Google Patents.
US1950419A
Expired / Lapsed
US
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Anti-back-lash device
Assignee: Schneider Electric Buildings Americas Inc
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Filing: 1929-06-17
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Granted: 1934-03-13
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Expires: 1949-06-17
Abstract
No abstract record available.
Inventors
- 👤 John B Sinderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:16
CPC Classifications
B; B23; B23F; B23F23/00; B23F23/10; B23Q; B23Q5/00; B23Q5/54; B23Q5/56; Y; Y10; Y10T; Y10T409/00; Y10T409/10; Y10T409/100636; Y10T409/107791; Y10T409/108745; Y10T74/00; Y10T74/19; Y10T74/19623; Y10T74/1987; Y10T74/19893; Y10T74/19898
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) | 1937-03-12 | 1937-09-11 | 1938-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-03-12 | 1941-09-11 | 1942-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-03-12 | 1945-09-11 | 1946-03-13 | $7700.00 | Window Closed / Lapsed |