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Patent US2554884A successfully refreshed from Google Patents.
US2554884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Work holder
Assignee: Individual
•
Filing: 1950-05-26
•
Granted: 1951-05-29
•
Expires: 1970-05-26
Abstract
No abstract record available.
Inventors
- 👤 William R Smith
- 👤 Otto R Rickel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:26
CPC Classifications
C; C03; C03B; C03B33/00; C03B33/10; C03B33/12; B; B26; B26D; B26D1/00; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10807; C03B33/02; C03B33/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US29585A
Cited
US2086866A
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 |