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US3383531A
Expired / Lapsed
US
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Electric one-way unharmonical vibarator
Assignee: MINISTERUL TRANSPORTURILOR AUTO
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Filing: 1967-07-18
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Granted: 1968-05-14
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Expires: 1987-07-18
Abstract
No abstract record available.
Inventors
- 👤 Gafencu Trainan Neculai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:11
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/06; H02K7/061; E; E02; E02D; E02D7/00; E02D7/18
Claims Analysis
Total Claims: 0
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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) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |