US2967270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct current motor control
Assignee: Beazer East Inc
•
Filing: 1958-01-27
•
Granted: 1961-01-03
•
Expires: 1978-01-27
Abstract
No abstract record available.
Inventors
- 👤 John W Drenning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:51
CPC Classifications
H; H02; H02P; H02P1/00; H02P1/16; H02P1/166
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) | 1964-01-03 | 1964-07-04 | 1965-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-03 | 1968-07-04 | 1969-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-03 | 1972-07-04 | 1973-01-03 | $7700.00 | Window Closed / Lapsed |