Patent US2721487A successfully refreshed from Google Patents.
US2721487A
Expired / Lapsed
US
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Planetary gearing drive systems
Assignee: MOREY MACHINERY CO Inc
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Filing: 1952-11-13
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Granted: 1955-10-25
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Expires: 1972-11-13
Abstract
No abstract record available.
Inventors
- 👤 Sigmund M Morey
- 👤 Secondo L Casella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:42
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/44; F16H3/62; F16H3/66; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/309184; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20238; Y10T74/20244
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1257462A
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US1379833A
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US1607986A
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US1814096A
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US2220174A
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US2259729A
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US2251625A
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US2222813A
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US2307285A
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US2555454A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |