Patent US2631919A successfully refreshed from Google Patents.
US2631919A
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US
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Chart pad for recording meters
Assignee: Elsag Bailey Inc
•
Filing: 1947-05-08
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Granted: 1953-03-17
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Expires: 1967-05-08
Abstract
No abstract record available.
Inventors
- 👤 Walter E Dueringer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:53
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/24; A; A01; A01J; A01J19/00; G01D15/28; G01D5/00; G01D5/02; G01D5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US245625A
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US286111A
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US506988A
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GB189509787A
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US1054720A
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US1583536A
Cited
US1594563A
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US1818630A
Cited
US1818774A
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US2210380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |