Patent US4320729A successfully refreshed from Google Patents.
US2702604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective carrier for portable audio devices and the like
Assignee: DONALD W RUBLE
•
Filing: 1950-03-07
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Granted: 1955-02-22
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Expires: 1970-03-07
Abstract
No abstract record available.
Inventors
- 👤 Robert W Hocks
- 👤 John C Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:47
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/273; H04; H04R; H04R25/00; H04R25/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1820643A
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US1901065A
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US2256803A
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US2409481A
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US2404799A
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US2505551A
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US2460408A
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US2504342A
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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) | 1958-02-21 | 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 |