US2447190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door lock
Assignee: National Brass Co
•
Filing: 1945-10-08
•
Granted: 1948-08-17
•
Expires: 1965-10-08
Abstract
No abstract record available.
Inventors
- 👤 Albert F Lickteig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:56
CPC Classifications
E; E05; E05B; E05B55/00; E05B55/12; Y; Y10; Y10T; Y10T292/00; Y10T292/06; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0977; Y10T292/098; Y10T292/0982; Y10T292/0985; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/55; Y10T70/5504
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US919979A
Cited
US2369873A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-17 | 1952-02-16 | 1952-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-17 | 1956-02-16 | 1956-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-17 | 1960-02-16 | 1960-08-17 | $7700.00 | Window Closed / Lapsed |