US3392349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mass proximity sensor
Assignee: Application Engineering Corp
•
Filing: 1967-02-23
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Granted: 1968-07-09
•
Expires: 1987-02-23
Abstract
No abstract record available.
Inventors
- 👤 Douglas M Bartley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:15
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/94; H03K17/945; H03K17/955; G; G01; G01F; G01F23/00; G01F23/22; G01F23/26; G01F23/263; G01F23/265
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2888945A
Cited
US3042908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |