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Patent US2581235A successfully refreshed from Google Patents.
US2581235A
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Arrangement for locking and unlocking a pulling member in different positions
Assignee: Svenska Flaktfabriken AB
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Filing: 1949-06-17
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Granted: 1952-01-01
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Expires: 1969-06-17
Abstract
No abstract record available.
Inventors
- 👤 Broberg Georg Karl Johan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:51
CPC Classifications
F; F16; F16B; F16B1/00; F16D; F16D41/00; Y; Y10; Y10S; Y10S292/00; Y10S292/04; Y10T; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20402; Y10T74/20576; Y10T74/20636; Y10T74/2066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |