Patent US2554939A successfully refreshed from Google Patents.
US2554939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid filler
Assignee: Individual
•
Filing: 1946-04-03
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Granted: 1951-05-29
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Expires: 1966-04-03
Abstract
No abstract record available.
Inventors
- 👤 Frank D Chapman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:43
CPC Classifications
B; B65; B65B; B65B3/00; B65B3/26; B65B3/30; B65B3/305
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US640141A
Cited
US1272828A
Cited
US1483861A
Cited
US1828117A
Cited
US2169573A
Cited
US2202073A
Cited
US2280826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |