US2470770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Communicating door lock
Assignee: Independent Lock Co
•
Filing: 1945-01-24
•
Granted: 1949-05-24
•
Expires: 1965-01-24
Abstract
No abstract record available.
Inventors
- 👤 Harvey Henry Stephen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:59
CPC Classifications
E; E05; E05B; E05B55/00; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0977; Y10T292/0982; Y10T292/0985; Y10T292/0989; Y10T292/1014; Y10T292/1022; Y10T292/1031
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1089435A
Cited
US1507631A
Cited
US1771387A
Cited
US1902343A
Cited
GB444134A
Cited
US2131458A
Cited
US2164290A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-23 | 1952-11-22 | 1953-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-23 | 1956-11-22 | 1957-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-23 | 1960-11-22 | 1961-05-24 | $7700.00 | Window Closed / Lapsed |