US2444691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Change-speed mechanism
Assignee: BARNES MOTOR DEVELOPMENTS Co
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Filing: 1944-01-03
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Granted: 1948-07-06
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Expires: 1964-01-03
Abstract
No abstract record available.
Inventors
- 👤 William B Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:37
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/02; F16H3/08; F16H3/083; F02; F02B; F02B33/00; F16H3/087; F16H3/093; F16H3/095; F16H61/00; F16H61/02; F16H61/0262; F02M; F02M2700/00; F02M2700/33; F02M2700/331; F02M2700/333; F16H63/00; F16H63/02; F16H63/30; F16H2063/3089; F16H2708/00; F16H2708/02; F16H2708/06; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19149; Y10T74/19158; Y10T74/19219; Y10T74/19233; Y10T74/19377; Y10T74/19414; Y10T74/19419; Y10T74/19423; Y10T74/19428; Y10T74/19433; Y10T74/19442; Y10T74/19451; Y10T74/1946
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1901193A
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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) | 1951-07-06 | 1952-01-05 | 1952-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-06 | 1956-01-05 | 1956-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-06 | 1960-01-05 | 1960-07-06 | $7700.00 | Window Closed / Lapsed |