US3302744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-magnetic acceleration method of increasing impact of dropped body and apparatus therefor
Assignee: Individual
•
Filing: 1963-12-02
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Granted: 1967-02-07
•
Expires: 1983-12-02
Abstract
No abstract record available.
Inventors
- 👤 Frederick L Lemm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:03
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/02; G01V1/143; G01V1/147
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
55 words
THE METHOD OF SETTING UP IMPACT VIBRATIONS IN THE EARTH COMPRISING LIFTING A MASS OF MAGNETIC MATERIAL OF PREDETERMINED WEIGHT TO A PREDETERMINED ELEVATION ABOVE THE EARTH''S SURFACE, RELEASING THE WEIGHT TO FALL BY GRAVITY AND THEREAFTER ABETTING THE FALL BY THE ACCELERATION OF INDUCED MAGNETISM BY MAGNETIC MEANS DISPOSED SUBSTANTIALLY BELOW SAID PREDETERMINED ELEVATION.
References Cited (Backward Citations)
US1753368A
Cited
US2745507A
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US2949909A
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US3054464A
Cited
US2967302A
Cited
US3189121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |