US3421348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically operating lock
Assignee: Huwil Werke GmbH
•
Filing: 1967-07-12
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Granted: 1969-01-14
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Expires: 1987-07-12
Abstract
No abstract record available.
Inventors
- 👤 Hermann Hallmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:41
CPC Classifications
E; E05; E05B; E05B47/00; E05B47/0038; E05B47/0042; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7051; Y10T70/7057; Y10T70/7441; Y10T70/7446; Y10T70/7486; Y10T70/7508; Y10T70/7514; Y10T70/778; Y10T70/7791; Y10T70/7842; Y10T70/7847; Y10T70/7853; Y10T70/7904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US468807A
Cited
US2177996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |