Patent US2484072A successfully refreshed from Google Patents.
US2484072A
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Reflecting range finder having uniformly calibrated scale
Assignee: Kalart Co Inc
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Filing: 1944-11-02
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Granted: 1949-10-11
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Expires: 1964-11-02
Abstract
No abstract record available.
Inventors
- 👤 Castedello William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:27
CPC Classifications
G; G03; G03B; G03B13/00; G03B13/18; G03B13/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US640679A
Cited
US1178474A
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US921137A
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US1703386A
Cited
GB191511677A
Cited
US2215370A
Cited
US2284831A
Cited
GB551510A
Cited
US2334075A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-10 | 1953-04-11 | 1953-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-10 | 1957-04-11 | 1957-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-10 | 1961-04-11 | 1961-10-11 | $7700.00 | Window Closed / Lapsed |