Patent US3275015A successfully refreshed from Google Patents.
US3275015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tuning fork oscillator
Assignee: International Business Machines Corp
•
Filing: 1963-10-29
•
Granted: 1966-09-27
•
Expires: 1983-10-29
Abstract
No abstract record available.
Inventors
- 👤 Johann H Meier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:13
CPC Classifications
F; F15; F15C; F15C1/00; F15C1/22; F15C1/02; F15C1/04; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/218; Y10T137/2202; Y10T137/2207; Y10T137/2278
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A FLUID PRESSURE OSCILLATOR COMPRISING, (A) A TUNING FORK HAVING A PREDETERMINED NATURAL FREQUENCY, (B) MEANS FOR APPLYING FLUID FROM A SOURCE OF FLUID PRESSURE DIRECTLY TO THE TUNING FORK EXCITING THE TUNING FORK, AND
Claim 2
Dependent Claim
35 words
A FLUID PRESSURE OSCILLATOR COMPRISING, (A) A TUNING FORK HAVING A PREDETERMINED NATURAL FREQUENCY, (B) MEANS FOR APPLYING FLUID FROM A SOURCE OF FLUID PRESSURE DIRECTLY TO THE TUNING FORK EXCITING THE TUNING FORK, AND
References Cited (Backward Citations)
US2879467A
Cited
US3124160A
Cited
US2152177A
Cited
US3057375A
Cited
US3016066A
Cited
US3117593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |