Patent US2873611A successfully refreshed from Google Patents.
US2873611A
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US
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Variable stroke mechanisms
Assignee: Individual
•
Filing: 1955-07-01
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Granted: 1959-02-17
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Expires: 1975-07-01
Abstract
No abstract record available.
Inventors
- 👤 Arnold E Biermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:43
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/04; F02B75/048; F02B75/045; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1503; Y10T74/1508; Y10T74/1511; Y10T74/1513; Y10T74/18; Y10T74/18056; Y10T74/18176
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US680237A
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FR378368A
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US1095675A
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US1189312A
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US1443719A
Cited
US1968030A
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US1818807A
Cited
US1909372A
Cited
US2262915A
Cited
FR923297A
Cited
US2776573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |