US2035878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and device for producing sanitary, hygienic, and chemical effects
Assignee: RCA Corp
•
Filing: 1926-09-20
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Granted: 1936-03-31
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Expires: 1946-09-20
Abstract
No abstract record available.
Inventors
- 👤 Geffcken Herrmann Heinrich
- 👤 Richter Rudolf Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:50
CPC Classifications
A; A61; A61N; A61N5/00; A61N5/06; H; H01; H01J; H01J13/00; H01J13/02; H01J2893/00; H01J2893/0072; H01J2893/0073
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) | 1939-03-31 | 1939-09-30 | 1940-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-03-31 | 1943-09-30 | 1944-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-03-31 | 1947-09-30 | 1948-03-31 | $7700.00 | Window Closed / Lapsed |