US2875411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical instrument with a drum indicating dial
Assignee: Daystrom Inc
•
Filing: 1954-05-20
•
Granted: 1959-02-24
•
Expires: 1974-05-20
Abstract
No abstract record available.
Inventors
- 👤 Francis X Lamb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:42
CPC Classifications
G; G01; G01R; G01R1/00; G01R1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1920764A
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US2346521A
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US2408060A
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US2719267A
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US1712560A
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US2552981A
Cited
US2607812A
Cited
DE825576C
Cited
US2612132A
Cited
US2738672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |