Patent US3137837A successfully refreshed from Google Patents.
US3137837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic power meter
Assignee: Motors Liquidation Co
•
Filing: 1959-12-17
•
Granted: 1964-06-16
•
Expires: 1979-12-17
Abstract
No abstract record available.
Inventors
- 👤 Frederick S Wreford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:05
CPC Classifications
G; G01; G01H; G01H3/00; G01H3/10; G01N; G01N29/00; G01N29/04; G01N29/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
APPARATUS FOR MEASURING ULTRASONIC ENERGY COMPRISING A PLURALITY OF FLAT PARTICLES, A SOURCE OF ULTRASONIC ENERGY, MEANS FOR SUSPENDING SAID PARTICLES IN THE VICINITY OF SAID SOURCE SO THAT THE ULTRASONIC ENERGY IMPINGES UPON THE PARTICLES WHEREBY SAID PARTICLES WILL TEND TO BECOME
Claim 2
Dependent Claim
43 words
APPARATUS FOR MEASURING ULTRASONIC ENERGY COMPRISING A PLURALITY OF FLAT PARTICLES, A SOURCE OF ULTRASONIC ENERGY, MEANS FOR SUSPENDING SAID PARTICLES IN THE VICINITY OF SAID SOURCE SO THAT THE ULTRASONIC ENERGY IMPINGES UPON THE PARTICLES WHEREBY SAID PARTICLES WILL TEND TO BECOME
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |