US2498893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parallel operation of vibrator systems
Assignee: Cornell Dubilier Electronics Inc
•
Filing: 1944-07-14
•
Granted: 1950-02-28
•
Expires: 1964-07-14
Abstract
No abstract record available.
Inventors
- 👤 Jose A Mas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:13
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/54; H02M7/58; H02M7/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB119081A
Cited
GB181070A
Cited
US2113762A
Cited
US2209806A
Cited
US2265717A
Cited
US2337207A
Cited
US2327577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |