US2643845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable leveling screw
Assignee: Keuffel and Esser Co
•
Filing: 1947-07-28
•
Granted: 1953-06-30
•
Expires: 1967-07-28
Abstract
No abstract record available.
Inventors
- 👤 Allister L Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:00
CPC Classifications
G; G01; G01C; G01C5/00; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19893; Y10T74/19898; Y10T74/19902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1500901A
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US2035055A
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US2248209A
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US2285080A
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US2424242A
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US2370223A
Cited
US2367259A
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US2438479A
Cited
US2440211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |