US1982958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable pump
Assignee: Individual
•
Filing: 1933-06-14
•
Granted: 1934-12-04
•
Expires: 1953-06-14
Abstract
No abstract record available.
Inventors
- 👤 Charles E Kraus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:21
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/12; F04B49/123; F04B49/125; F04B49/126; F04B1/00; F04B1/04; F04B1/06; F04B1/07; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/211; Y10T74/2111; Y10T74/2112; Y10T74/2114
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) | 1937-12-03 | 1938-06-04 | 1938-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-12-03 | 1942-06-04 | 1942-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-12-03 | 1946-06-04 | 1946-12-04 | $7700.00 | Window Closed / Lapsed |