US2746155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precision surveying instrument
Assignee: C L BERGER AND SONS Inc
•
Filing: 1952-01-24
•
Granted: 1956-05-22
•
Expires: 1972-01-24
Abstract
No abstract record available.
Inventors
- 👤 Churgin Leopold
- 👤 Donald N Grundberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:10
CPC Classifications
G; G01; G01C; G01C1/00; G01C1/02; G12; G12B; G12B5/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1710057A
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US1882523A
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US1777853A
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US2104151A
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US2238118A
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US2408343A
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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) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |