Patent US2567151A successfully refreshed from Google Patents.
US2567151A
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US
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Diaphragm unit
Assignee: Beloit Iron Works Inc
•
Filing: 1945-07-30
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Granted: 1951-09-04
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Expires: 1965-07-30
Abstract
No abstract record available.
Inventors
- 👤 Hornbostel Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:11
CPC Classifications
D; D21; D21G; D21G9/00; D21G9/0009; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T137/8275; Y10T137/8292
Claims Analysis
Total Claims: 0
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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) | 1954-09-03 | 1955-03-05 | 1955-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-03 | 1959-03-05 | 1959-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-03 | 1963-03-05 | 1963-09-04 | $7700.00 | Window Closed / Lapsed |