US3103653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicational system for electromagnets
Assignee: Westinghouse Electric Corp
•
Filing: 1958-10-20
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Granted: 1963-09-10
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Expires: 1978-10-20
Abstract
No abstract record available.
Inventors
- 👤 Mortimer A Schultz
- 👤 George W Nagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:43
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
69 words
AN INDICATING AND OPERATING SYSTEM FOR AN ELECTROMAGNET ADAPTED FOR ENGAGEMENT WITH AN EXTERNAL MAGNETIC MEMBER, SAID SYSTEM COMPRISING A RESONABLE CIRCUIT INCLUDING CAPACITANCE MEANS, SAID ELECTROMAGNET BEING CONNECTED ELECTRICALLY TO SAID RESONABLE CIRCUIT, MEANS FOR APPLYING A FLUCTUATING DIRECT POTENTIAL TO SAID CIRCUIT AND TO SAID ELECTROMAGNET SO AS TO PROVIDE FOR LIFTING POWER DERIVED SUBSTANTIALLY FROM DIRECT FLUX, SAID ELECTROMAGNET CHANGING THE RESONANT CONDITION OF SAID CIRCUIT
References Cited (Backward Citations)
US2021754A
Cited
US2040677A
Cited
US2404982A
Cited
GB700247A
Cited
US2897412A
Cited
US2875429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-09 | 1967-03-11 | 1967-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-09 | 1971-03-11 | 1971-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-09 | 1975-03-11 | 1975-09-10 | $7700.00 | Window Closed / Lapsed |