Patent US2702736A successfully refreshed from Google Patents.
US2702736A
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US
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Polar linear recorder
Assignee: SOUND APPARATUS Co
•
Filing: 1952-04-09
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Granted: 1955-02-22
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Expires: 1972-04-09
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Niemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:15
CPC Classifications
G; G01; G01D; G01D9/00; G01D9/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US389273A
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US484905A
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US1310201A
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US921628A
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US910630A
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US1365732A
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US2102708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-21 | 1958-08-23 | 1959-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-21 | 1962-08-23 | 1963-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-21 | 1966-08-23 | 1967-02-22 | $7700.00 | Window Closed / Lapsed |