Patent US2047327A successfully refreshed from Google Patents.
US2047327A
Expired / Lapsed
US
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Level-indicating device
Assignee: BEAVER PORTLAND CEMENT CO
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Filing: 1933-04-24
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Granted: 1936-07-14
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Expires: 1953-04-24
Abstract
No abstract record available.
Inventors
- 👤 Walter H Muirhead
- 👤 Martin Claud Worth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:19
CPC Classifications
G; G01; G01C; G01C9/00; E; E01; E01C; E01C23/00; E01C23/01; G01C7/00; G01C7/02; G01C7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-07-14 | 1940-01-13 | 1940-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-07-14 | 1944-01-13 | 1944-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-07-14 | 1948-01-13 | 1948-07-14 | $7700.00 | Window Closed / Lapsed |