Patent US2520784A successfully refreshed from Google Patents.
US2520784A
Expired / Lapsed
US
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Speed reduction gearing
Assignee: Individual
•
Filing: 1946-05-31
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Granted: 1950-08-29
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Expires: 1966-05-31
Abstract
No abstract record available.
Inventors
- 👤 Theodore F Schlicksupp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:57
CPC Classifications
F; F16; F16H; F16H1/00; F16H1/02; F16H1/04; F16H1/12; F16H1/16; F16H1/163; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19949; Y10T74/19953
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US336200A
Cited
US597154A
Cited
GB190506233A
Cited
US1152001A
Cited
FR454592A
Cited
GB130529A
Cited
CH139400A
Cited
FR769129A
Cited
US2091268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |