US2429189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servomotor
Assignee: HM Hobson Ltd
•
Filing: 1944-08-29
•
Granted: 1947-10-14
•
Expires: 1964-08-29
Abstract
No abstract record available.
Inventors
- 👤 Maddox Stanley Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:02
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/02; F15B11/04; F15B11/046; F15B2211/00; F15B2211/30; F15B2211/305; F15B2211/30525; F15B2211/31; F15B2211/3144; F15B2211/32; F15B2211/321; F15B2211/324; F15B2211/35; F15B2211/351; F15B2211/70; F15B2211/705; F15B2211/7058; F15B2211/75; F15B2211/77; F15B2211/80; F15B2211/895
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1877102A
Cited
US1842725A
Cited
US2217364A
Cited
US2242374A
Cited
US2305070A
Cited
GB548778A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-13 | 1951-04-14 | 1951-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-13 | 1955-04-14 | 1955-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-13 | 1959-04-14 | 1959-10-14 | $7700.00 | Window Closed / Lapsed |