Patent US2075802A successfully refreshed from Google Patents.
US2075802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of complex sounds
Assignee: Individual
•
Filing: 1933-01-26
•
Granted: 1937-04-06
•
Expires: 1953-01-26
Abstract
No abstract record available.
Inventors
- 👤 Davis Merlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:19
CPC Classifications
G; G06; G06E; G06E3/00; G06E3/001; G10; G10H; G10H3/00; G10H3/03; G10H3/06; Y; Y10; Y10S; Y10S84/00; Y10S84/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1940-04-05 | 1940-10-05 | 1941-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-04-05 | 1944-10-05 | 1945-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-04-05 | 1948-10-05 | 1949-04-06 | $7700.00 | Window Closed / Lapsed |