US2405283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic fluid mechanism
Assignee: FED RESERVE BANK
•
Filing: 1941-08-19
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Granted: 1946-08-06
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Expires: 1961-08-19
Abstract
No abstract record available.
Inventors
- 👤 Birmann Rudolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:00
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/04; F01D5/043; F01D5/045; F04; F04D; F04D29/00; F04D29/26; F04D29/28; F04D29/284; F04D29/285; F04D29/40; F04D29/42; F04D29/44; F04D29/441; F04D29/444; F04D29/66; F04D29/661; F04D29/668; F16; F16F; F16F15/00; F16F15/10; F05; F05D; F05D2250/00; F05D2250/50; F05D2250/52; Y; Y10; Y10S; Y10S416/00; Y10S416/50
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) | 1949-08-05 | 1950-02-04 | 1950-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-08-05 | 1954-02-04 | 1954-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-08-05 | 1958-02-04 | 1958-08-06 | $7700.00 | Window Closed / Lapsed |