Patent US2565136A successfully refreshed from Google Patents.
US2565136A
Expired / Lapsed
US
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Automatic molten glass level control apparatus
Assignee: Emhart Manufacturing Co
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Filing: 1948-08-07
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Granted: 1951-08-21
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Expires: 1968-08-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Minor G Kretzmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:06
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/16; C03B5/24; C03B5/245; C03B3/00; G; G05; G05D; G05D9/00; G05D9/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-20 | 1955-02-19 | 1955-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-20 | 1959-02-19 | 1959-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-20 | 1963-02-19 | 1963-08-21 | $7700.00 | Window Closed / Lapsed |