Patent US2706812A successfully refreshed from Google Patents.
US2706812A
Expired / Lapsed
US
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Null balance control systems
Assignee: American Machine and Metals Inc
•
Filing: 1951-10-20
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Granted: 1955-04-19
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Expires: 1971-10-20
Abstract
No abstract record available.
Inventors
- 👤 Dinlocker Robert Irwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:25
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/1418
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2016978A
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US2219282A
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US2408524A
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US2362661A
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US2420539A
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US2334543A
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US2360121A
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US2380251A
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US2457558A
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US2503851A
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US2509986A
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US2452862A
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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) | 1958-04-18 | 1958-10-18 | 1959-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-18 | 1962-10-18 | 1963-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-18 | 1966-10-18 | 1967-04-19 | $7700.00 | Window Closed / Lapsed |