US1411145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic control of motor-driven pump speeds
Assignee: Individual
•
Filing: 1921-03-02
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Granted: 1922-03-28
•
Expires: 1941-03-02
Abstract
No abstract record available.
Inventors
- 👤 Whitted Thomas Byrd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:49
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/20; F04B49/007; F04B49/04; F04D; F04D13/00; F04D13/12; F04D13/14; F04D15/00; F04D15/0066; F04D15/02; F04D15/0209; F04D15/0218
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) | 1925-03-27 | 1925-09-26 | 1926-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-03-27 | 1929-09-26 | 1930-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-03-27 | 1933-09-26 | 1934-03-28 | $7700.00 | Window Closed / Lapsed |