US2475707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Object locator system
Assignee: AT&T Inc
•
Filing: 1945-03-19
•
Granted: 1949-07-12
•
Expires: 1965-03-19
Abstract
No abstract record available.
Inventors
- 👤 Paul A Jeanne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:48
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1924174A
Cited
US2145724A
Cited
US2189549A
Cited
US2409462A
Cited
US2295293A
Cited
US2300199A
Cited
US2416088A
Cited
US2453711A
Cited
US2426201A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-11 | 1953-01-10 | 1953-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-11 | 1957-01-10 | 1957-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-11 | 1961-01-10 | 1961-07-12 | $7700.00 | Window Closed / Lapsed |