Patent US3279388A successfully refreshed from Google Patents.
US3279388A
Expired / Lapsed
US
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Semi-rotary magnetic device
Assignee: Individual
•
Filing: 1964-09-25
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Granted: 1966-10-18
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Expires: 1984-09-25
Abstract
No abstract record available.
Inventors
- 👤 Philippe R L Roudaut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:36
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/08; F04B43/082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A SEMI-ROTARY MAGNETIC DEVICE FOR DRIVING TUBUALR DIAPHRAGM PUMPS, COMPRISING RINGS OF MAGNETIC MATERIAL DISTRIBUTED ALONG THE LENGTH OF THE DIAPHRAGM AND MEANS FOR SUBJECTING SAID RINGS TO VARIABLE MAGNETIC FLUX IN ORDER TO PRODUCE THE REQUIRED DEFORMATION OF THE DIAPHRAGM.
Claim 2
Dependent Claim
41 words
A SEMI-ROTARY MAGNETIC DEVICE FOR DRIVING TUBUALR DIAPHRAGM PUMPS, COMPRISING RINGS OF MAGNETIC MATERIAL DISTRIBUTED ALONG THE LENGTH OF THE DIAPHRAGM AND MEANS FOR SUBJECTING SAID RINGS TO VARIABLE MAGNETIC FLUX IN ORDER TO PRODUCE THE REQUIRED DEFORMATION OF THE DIAPHRAGM.
References Cited (Backward Citations)
US1922196A
Cited
US2278821A
Cited
FR1008458A
Cited
AT175516B
Cited
US2888877A
Cited
US3089425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |