Patent US2487936A successfully refreshed from Google Patents.
US2487936A
Expired / Lapsed
US
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Variable speed power transmission pulley unit
Assignee: Horton Manufacturing Co Inc
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Filing: 1946-11-29
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Granted: 1949-11-15
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Expires: 1966-11-29
Abstract
No abstract record available.
Inventors
- 👤 Lawrence F Mccrady
- 👤 Albert W Barton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:43
CPC Classifications
F; F16; F16D; F16D43/00; F16D43/02; F16D43/04; F16D43/06; F16D43/08; F16D43/12; F16D13/00; F16D13/22; F16D13/38; F16D13/52; F16D13/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US453033A
Cited
US773370A
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US1599343A
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US1662598A
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US1963277A
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US2197522A
Cited
US2207051A
Cited
US2446703A
Cited
US2429837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |