US2449711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door lock
Assignee: Individual
•
Filing: 1945-05-24
•
Granted: 1948-09-21
•
Expires: 1965-05-24
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Milligan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:10
CPC Classifications
E; E05; E05B; E05B55/00; E05B55/005; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/5394; Y10T70/5416; Y10T70/542; Y10T70/5442; Y10T70/5611; Y10T70/5757; Y10T70/5765; Y10T70/577; Y10T70/5792
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US868782A
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US842834A
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US1576574A
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US1804482A
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US1755434A
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US2018093A
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US1919750A
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US2207143A
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US2282213A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-21 | 1952-03-22 | 1952-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-21 | 1956-03-22 | 1956-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-21 | 1960-03-22 | 1960-09-21 | $7700.00 | Window Closed / Lapsed |