Patent US2727607A successfully refreshed from Google Patents.
US2727607A
Expired / Lapsed
US
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Variable speed transmission apparatus
Assignee: ESTHER C LANGER
•
Filing: 1950-09-23
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Granted: 1955-12-20
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Expires: 1970-09-23
Abstract
No abstract record available.
Inventors
- 👤 Andrew J Colmerauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:15
CPC Classifications
F; F16; F16D; F16D31/00; F16D31/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1307488A
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US873621A
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US979272A
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US1030463A
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US2086889A
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US2066450A
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US2418625A
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US2482313A
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US2550373A
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US2644561A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |