US2967948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Object detecting and indicating device
Assignee: International Business Machines Corp
•
Filing: 1955-09-20
•
Granted: 1961-01-10
•
Expires: 1975-09-20
Abstract
No abstract record available.
Inventors
- 👤 Francis L Pratt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:42
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/01; G08G1/015
Claims Analysis
Total Claims: 0
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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) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |