US2880291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protectors for electric circuits
Assignee: McGraw Edison Co
•
Filing: 1955-01-14
•
Granted: 1959-03-31
•
Expires: 1975-01-14
Abstract
No abstract record available.
Inventors
- 👤 Frank H Bussmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:30
CPC Classifications
H; H01; H01H; H01H23/00; H01H23/02; H01H23/12; H01H23/16; H01H23/168; H01H9/00; H01H9/30; H01H2009/307
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2531350A
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GB648875A
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US2538581A
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US2738389A
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US2727956A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |