US900392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound recording and reproducing instrument.
Assignee: STILSON HUTCHINS
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Filing: 1908-03-05
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Granted: 1908-10-06
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Expires: 1928-03-05
Abstract
No abstract record available.
Inventors
- 👤 Georg Kirkegaard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:19
CPC Classifications
G; G11; G11B; G11B25/00; G11B25/04; G11B25/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1911-10-06 | 1912-04-06 | 1912-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-10-06 | 1916-04-06 | 1916-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-10-06 | 1920-04-06 | 1920-10-06 | $7700.00 | Window Closed / Lapsed |