US2559403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flotation washer
Assignee: Individual
•
Filing: 1946-12-26
•
Granted: 1951-07-03
•
Expires: 1966-12-26
Abstract
No abstract record available.
Inventors
- 👤 Cover Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:07
CPC Classifications
B; B03; B03B; B03B5/00; B03B5/28; B03B5/30; B03B5/36; B03B11/00; B03B2011/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1286554A
Cited
US1757103A
Cited
US1743179A
Cited
US2035118A
Cited
US2238997A
Cited
US2349528A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |