US3435311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oscillatory electromechanical converter
Assignee: Suwa Seikosha KK
•
Filing: 1965-12-22
•
Granted: 1969-03-25
•
Expires: 1985-12-22
Abstract
No abstract record available.
Inventors
- 👤 Masanao Matsuzawa
- 👤 Issei Imahashi
- 👤 Koichi Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:13
CPC Classifications
G; G04; G04C; G04C13/00; G04C13/08; G04C13/10; G04C3/00; H; H02; H02K; H02K7/00; H02K7/06; H02K7/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2730634A
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US2771572A
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US2920439A
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GB862586A
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US2954642A
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US2946940A
Cited
US2960643A
Cited
US2999966A
Cited
US3221231A
Cited
US3141290A
Cited
US3343012A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |