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Patent US2379437A successfully refreshed from Google Patents.
US2379437A
Expired / Lapsed
US
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Laminated padlock
Assignee: NORWALK LOCK Co
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Filing: 1943-01-07
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Granted: 1945-07-03
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Expires: 1963-01-07
Abstract
No abstract record available.
Inventors
- 👤 Hines John
- 👤 Segal Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:25
CPC Classifications
E; E05; E05B; E05B67/00; E05B67/06; E05B67/22; E05B67/24; Y; Y10; Y10T; Y10T70/00; Y10T70/40; Y10T70/413; Y10T70/437; Y10T70/446; Y10T70/452; Y10T70/459; Y10T70/487; Y10T70/489
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) | 1948-07-02 | 1949-01-01 | 1949-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-07-02 | 1953-01-01 | 1953-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-07-02 | 1957-01-01 | 1957-07-03 | $7700.00 | Window Closed / Lapsed |