Patent US3021731A successfully refreshed from Google Patents.
US3021731A
Expired / Lapsed
US
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Planetary gear transmission
Assignee: Individual
•
Filing: 1958-06-13
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Granted: 1962-02-20
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Expires: 1978-06-13
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm G Stoeckicht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:21
CPC Classifications
F; F16; F16H; F16H1/00; F16H1/28; F16H1/2809; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19633
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US618272A
Cited
FR958710A
Cited
DE682275C
Cited
US2252967A
Cited
CH253321A
Cited
GB664297A
Cited
US2591734A
Cited
US2703021A
Cited
US2700311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |