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Patent US2946991A successfully refreshed from Google Patents.
US2946991A
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US
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Material level indicating apparatus
Assignee: Fuller Co
•
Filing: 1955-11-14
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Granted: 1960-07-26
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Expires: 1975-11-14
Abstract
No abstract record available.
Inventors
- 👤 Lindenberg Waldemar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:29
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/26; G01F23/263
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2354964A
Cited
US2375084A
Cited
US2506143A
Cited
US2477511A
Cited
US2677964A
Cited
US2657579A
Cited
US2774959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |