US2894398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: DAVID W VAN STORY
•
Filing: 1954-09-10
•
Granted: 1959-07-14
•
Expires: 1974-09-10
Abstract
No abstract record available.
Inventors
- 👤 John O Ayers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:08
CPC Classifications
F; F16; F16H; F16H37/00; F16H37/12; F16H37/122; F16H25/00; F16H25/08; F16H25/12; F16H25/122; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18304; Y10T74/18312; Y10T74/18416; Y10T74/18464; Y10T74/21; Y10T74/2101; Y10T74/2107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US267793A
Cited
US1177428A
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US2002657A
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US2216990A
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US2503158A
Cited
US2441596A
Cited
US2539921A
Cited
US2705592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-13 | 1963-01-12 | 1963-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-13 | 1967-01-12 | 1967-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-13 | 1971-01-12 | 1971-07-14 | $7700.00 | Window Closed / Lapsed |