US2772848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid seal element
Assignee: Parker Appliance Co
•
Filing: 1952-11-28
•
Granted: 1956-12-04
•
Expires: 1972-11-28
Abstract
No abstract record available.
Inventors
- 👤 Theodore H Holzer
- 👤 Donald C Asbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:57
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36; F16J15/363; F02; F02M; F02M55/00; F02M55/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1905583A
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US1889868A
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US2259453A
Cited
US2377452A
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US2558087A
Cited
US2548128A
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US2464136A
Cited
US2549951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |