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US2470589A
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Assignee: Associated Dev & Res Corp
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Filing: 1947-03-27
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Granted: 1949-05-17
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Expires: 1967-03-27
Abstract
No abstract record available.
Inventors
- 👤 Torkel E Torkelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:02
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/44; F16H3/62; F16H3/64; F16H63/00; F16H63/02; F16H63/30; F16H63/304; F16H2063/305
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-16 | 1952-11-15 | 1953-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-16 | 1956-11-15 | 1957-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-16 | 1960-11-15 | 1961-05-17 | $7700.00 | Window Closed / Lapsed |