US2942490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-speed transmission for portable power-operated tool
Assignee: Black and Decker Corp
•
Filing: 1959-09-17
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Granted: 1960-06-28
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Expires: 1979-09-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert H Riley
- 👤 Harold O Short
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:03
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/02; F16H3/08; F16H2714/00; F16H2714/04; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19377; Y10T74/19414; Y10T74/19419; Y10T74/19442; Y10T74/19451; Y10T74/19456; Y10T74/19642; Y10T74/19679
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1864549A
Cited
US2711222A
Cited
US2727602A
Cited
US2669880A
Cited
US2676494A
Cited
US2774249A
Cited
US2893256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |