US3399314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic signal apparatus
Assignee: HP Inc
•
Filing: 1965-11-12
•
Granted: 1968-08-27
•
Expires: 1985-11-12
Abstract
No abstract record available.
Inventors
- 👤 Edward H Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:59
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0607; B06B1/0611; B06B1/0207; B06B1/0215; B06B2201/00; B06B2201/50; B06B2201/55
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2806155A
Cited
US2921134A
Cited
US3246164A
Cited
US3243648A
Cited
US3321738A
Cited
US3271622A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |