US2267260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Consuming apparatus adapted to be supplied by direct current
Assignee: Koninklijke Philips NV
•
Filing: 1939-04-22
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Granted: 1941-12-23
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Expires: 1959-04-22
Abstract
No abstract record available.
Inventors
- 👤 Alexander Johan Willem
- 👤 Kuperus Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:23
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)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-12-22 | 1945-06-23 | 1945-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-12-22 | 1949-06-23 | 1949-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-12-22 | 1953-06-23 | 1953-12-23 | $7700.00 | Window Closed / Lapsed |