US2794508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controllable pitch propeller
Assignee: Metso Fiber Karlstad AB
•
Filing: 1954-10-25
•
Granted: 1957-06-04
•
Expires: 1974-10-25
Abstract
No abstract record available.
Inventors
- 👤 Lennart Anders Pehrsson
- 👤 Karl Einar Svahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:22
CPC Classifications
B; B63; B63H; B63H3/00; B63H3/06; B63H3/08; B63H3/081; B63H3/082; F; F03; F03B; F03B3/00; F03B3/12; F03B3/14; F03B3/145; F04; F04D; F04D15/00; F04D15/0055; H; H02; H02J; H02J13/00; H02J13/13; H02J13/1311; H02J13/1313; H02J13/1315; F05; F05B; F05B2260/00; F05B2260/40; F05B2260/406; F05B2260/70; F05B2260/76; H02J2105/00; H02J2105/30; H02J2105/31; Y; Y02; Y02E; Y02E10/00; Y02E10/20; Y02E60/00; Y04; Y04S; Y04S40/00; Y04S40/12; Y04S40/121
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1396325A
Cited
US2255920A
Cited
US2433990A
Cited
DE889402C
Cited
US2513546A
Cited
GB675767A
Cited
US2686569A
Cited
US2693243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |