Patent US5400644A successfully refreshed from Google Patents.
Patent US3380315A successfully refreshed from Google Patents.
US3380315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable speed gear
Assignee: Individual
•
Filing: 1965-10-12
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Granted: 1968-04-30
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Expires: 1985-10-12
Abstract
No abstract record available.
Inventors
- 👤 Reginald S Emerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:15
CPC Classifications
F; F16; F16H; F16H9/00; F16H9/02; F16H9/04; F16H9/12; F16H9/16; F16H2009/163
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1236749A
Cited
US1235794A
Cited
US2308868A
Cited
FR1014284A
Cited
GB707483A
Cited
US3267760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |