Patent US2087021A successfully refreshed from Google Patents.
US2087021A
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US
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Driving gear
Assignee: AG BUSH
•
Filing: 1936-09-03
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Granted: 1937-07-13
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Expires: 1956-09-03
Abstract
No abstract record available.
Inventors
- 👤 Harry J Criner
- 👤 Harry E Criner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:06
CPC Classifications
D; D06; D06F; D06F13/00; D06F13/02; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18416; Y10T74/18464; Y10T74/1848; Y10T74/19; Y10T74/19191; Y10T74/19195; Y10T74/19642; Y10T74/1967; Y10T74/19698; Y10T74/19828
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1940-07-12 | 1941-01-11 | 1941-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-07-12 | 1945-01-11 | 1945-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-07-12 | 1949-01-11 | 1949-07-13 | $7700.00 | Window Closed / Lapsed |