Patent US2715840A successfully refreshed from Google Patents.
US2715840A
Expired / Lapsed
US
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Multiple step-up mechanism
Assignee: REPUBLIC PATENT Corp
•
Filing: 1951-04-25
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Granted: 1955-08-23
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Expires: 1971-04-25
Abstract
No abstract record available.
Inventors
- 👤 Melvin J Binks
- 👤 Alphonse A Samolis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:50
CPC Classifications
F; F16; F16H; F16H31/00; F16H31/003; F16H31/005; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/1529; Y10T74/1558; Y10T74/1577; Y10T74/1579; Y10T74/1584; Y10T74/1585
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-22 | 1959-02-21 | 1959-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-22 | 1963-02-21 | 1963-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-22 | 1967-02-21 | 1967-08-23 | $7700.00 | Window Closed / Lapsed |