US2814746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor
Assignee: US Philips Corp
•
Filing: 1954-08-12
•
Granted: 1957-11-26
•
Expires: 1974-08-12
Abstract
No abstract record available.
Inventors
- 👤 Boerdijk Arie Hendrik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:43
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/12; H02K21/24; D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/56; D21H19/58; H02K21/125; H02K2201/00; H02K2201/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US630333A
Cited
US2070447A
Cited
US2292265A
Cited
US2443104A
Cited
US2566238A
Cited
US2539144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-25 | 1961-05-27 | 1961-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-25 | 1965-05-27 | 1965-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-25 | 1969-05-27 | 1969-11-26 | $7700.00 | Window Closed / Lapsed |