Patent US2408235A successfully refreshed from Google Patents.
US2900520A
Expired / Lapsed
US
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Light sensitive control means
Assignee: MICRO BALANCING Inc
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Filing: 1958-03-24
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Granted: 1959-08-18
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Expires: 1978-03-24
Abstract
No abstract record available.
Inventors
- 👤 Karl F Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:48
CPC Classifications
H; H01; H01H; H01H47/00; H01H47/22; H01H47/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1618816A
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US1878010A
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US1949689A
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US2057384A
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US2054380A
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US2543262A
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US2748223A
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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) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |