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US2137316A
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Electrode system and method of making same
Assignee: Koninklijke Philips NV
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Filing: 1936-02-06
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Granted: 1938-11-22
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Expires: 1956-02-06
Abstract
No abstract record available.
Inventors
- 👤 Willem Christian Van Geel
- 👤 Emmens Hendrik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:58
CPC Classifications
H; H10; H10D; H10D48/00; H10D48/01; H10D48/04; H10D48/043; H10P; H10P14/00; H10P14/20; H10P14/34; H10P14/3402; H10P14/38; H10P14/3802; Y; Y10; Y10S; Y10S252/00; Y10S252/95
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) | 1941-11-21 | 1942-05-23 | 1942-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-11-21 | 1946-05-23 | 1946-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-11-21 | 1950-05-23 | 1950-11-22 | $7700.00 | Window Closed / Lapsed |