Patent US2547475A successfully refreshed from Google Patents.
US2547475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor-driven actuator unit
Assignee: Individual
•
Filing: 1949-04-01
•
Granted: 1951-04-03
•
Expires: 1969-04-01
Abstract
No abstract record available.
Inventors
- 👤 Victor A Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:14
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/10; F; F16; F16K; F16K31/00; F16K31/02; F16K31/04; F16K31/041; F16K31/043
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB190415925A
Cited
US819890A
Cited
US1238060A
Cited
US2226227A
Cited
US2410695A
Cited
US2422905A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |