US3493705A
Expired / Lapsed
US
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Assignee: Schoeller and Co Elektrotecnische Fabrik GmbH and Co
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Filing: 1967-11-07
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Granted: 1970-02-03
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Expires: 1987-11-07
Abstract
No abstract record available.
Inventors
- 👤 Ludwig Noll
- 👤 Leopold Gindle
- 👤 Carl F Gruber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:06
CPC Classifications
H; H03; H03J; H03J5/00; H03J5/24; H03J5/26; H03J5/32; H01; H01H; H01H1/00; H01H1/12; H01H1/36; H01H1/40; H01H1/403; H01H13/00; H01H13/50; H01H13/56; H01H13/562; H03J5/02; H03J5/04; H03J5/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2471568A
Cited
US3248491A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |