US2709448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid feeder
Assignee: Individual
•
Filing: 1953-04-24
•
Granted: 1955-05-31
•
Expires: 1973-04-24
Abstract
No abstract record available.
Inventors
- 👤 Edward S Rudnick
- 👤 Stuart I Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:02
CPC Classifications
D; D06; D06F; D06F39/00; D06F39/02; D06F39/022; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86187; Y10T137/87571; Y10T137/87587; Y10T137/87643
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) | 1958-05-30 | 1958-11-29 | 1959-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-30 | 1962-11-29 | 1963-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-30 | 1966-11-29 | 1967-05-31 | $7700.00 | Window Closed / Lapsed |