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Patent US2293942A successfully refreshed from Google Patents.
US2293942A
Expired / Lapsed
US
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Latching construction
Assignee: ADOLF C BLECHNER
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Filing: 1938-11-21
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Granted: 1942-08-25
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Expires: 1958-11-21
Abstract
No abstract record available.
Inventors
- 👤 Klahn Edwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:23
CPC Classifications
E; E05; E05C; E05C9/00; E05C9/04; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5009; Y10T70/5031; Y10T70/5093; Y10T70/5097; Y10T70/5111; Y10T70/5115; Y10T70/5155; Y10T70/5199; Y10T70/5226; Y10T70/5235
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) | 1945-08-24 | 1946-02-23 | 1946-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-08-24 | 1950-02-23 | 1950-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-08-24 | 1954-02-23 | 1954-08-25 | $7700.00 | Window Closed / Lapsed |