US3438020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for detecting object movement
Assignee: Individual
•
Filing: 1966-01-03
•
Granted: 1969-04-08
•
Expires: 1986-01-03
Abstract
No abstract record available.
Inventors
- 👤 Julius O Lerner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:03
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/001
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2031951A
Cited
US2333688A
Cited
US2400309A
Cited
US2769972A
Cited
US2826753A
Cited
US3047850A
Cited
US3046519A
Cited
US3293631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |