Patent US2689916A successfully refreshed from Google Patents.
US2689916A
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US
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Actuator for bucky diaphragms
Assignee: Liebel Flarsheim Co LLC
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Filing: 1952-05-03
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Granted: 1954-09-21
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Expires: 1972-05-03
Abstract
No abstract record available.
Inventors
- 👤 Robert R Lohman
- 👤 Orlestus R Brenner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:04
CPC Classifications
G; G21; G21K; G21K1/00; G21K1/02; G21K1/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1464478A
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US1508391A
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US2077295A
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US1945499A
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US2147601A
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US2309499A
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US2591536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |