US2574751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine for producing reciprocatory motion having substantially constant velocity except during reversals
Assignee: Filer and Stowell Co
•
Filing: 1948-12-03
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Granted: 1951-11-13
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Expires: 1968-12-03
Abstract
No abstract record available.
Inventors
- 👤 Vincent R Noll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:17
CPC Classifications
B; B27; B27L; B27L1/00; B27L1/14; B06; B06B; B06B1/00; B06B1/18; B06B1/183; F; F16; F16H; F16H43/00; Y; Y10; Y10S; Y10S417/00; Y10S417/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US845827A
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US897676A
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US1216221A
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US1619475A
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US1744514A
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US2045945A
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US2322271A
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US2363142A
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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) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |