US1661473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Accumulator for radiant energy
Assignee: Individual
•
Filing: 1924-06-10
•
Granted: 1928-03-06
•
Expires: 1944-06-10
Abstract
No abstract record available.
Inventors
- 👤 Robert H Goddard
- 👤 Riffolt Nils August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:08
CPC Classifications
F; F24; F24S; F24S60/00; F24S20/00; F24S20/20; F24S23/00; F24S23/70; F24S23/74; F24S2023/88; Y; Y02; Y02E; Y02E10/00; Y02E10/40; Y10; Y10S; Y10S126/00; Y10S126/907; Y10S60/00; Y10S60/915
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) | 1931-03-06 | 1931-09-05 | 1932-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-03-06 | 1935-09-05 | 1936-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-03-06 | 1939-09-05 | 1940-03-06 | $7700.00 | Window Closed / Lapsed |