US1630367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound collecting and transmitting
Assignee: Dictaphone Corp
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Filing: 1924-05-29
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Granted: 1927-05-31
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Expires: 1944-05-29
Abstract
No abstract record available.
Inventors
- 👤 Charles K Woodbridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:40
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/22; G10K13/00; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20256; Y10T74/20268; Y10T74/2028; Y10T74/20287; Y10T74/20396; Y10T74/20468; Y10T74/20576; Y10T74/20732; Y10T74/2078; Y10T74/20828
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) | 1930-05-30 | 1930-11-29 | 1931-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-05-30 | 1934-11-29 | 1935-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-05-30 | 1938-11-29 | 1939-05-31 | $7700.00 | Window Closed / Lapsed |