US2960643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic harmonic oscillation device
Assignee: Motors Liquidation Co
•
Filing: 1958-07-09
•
Granted: 1960-11-15
•
Expires: 1978-07-09
Abstract
No abstract record available.
Inventors
- 👤 Anderson B Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:16
CPC Classifications
H; H02; H02K; H02K33/00; H02K33/16; H03; H03B; H03B5/00; H03B5/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1202446A
Cited
GB377047A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-15 | 1964-05-16 | 1964-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-15 | 1968-05-16 | 1968-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-15 | 1972-05-16 | 1972-11-15 | $7700.00 | Window Closed / Lapsed |