US2827802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid differential
Assignee: FRANK J KALMAR
•
Filing: 1956-01-03
•
Granted: 1958-03-25
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Expires: 1976-01-03
Abstract
No abstract record available.
Inventors
- 👤 William H Burke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:48
CPC Classifications
F; F16; F16H; F16H48/00; F16H48/20; F16H48/30; F16H48/12; F16H48/18; F16H2048/204; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19005; Y10T74/19023; Y10T74/19037; Y10T74/19149; Y10T74/19158
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2414396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |