Patent CH211484A successfully refreshed from Google Patents.
Patent US2833570A successfully refreshed from Google Patents.
US2833570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal and dust guard for journal box
Assignee: Individual
•
Filing: 1955-02-21
•
Granted: 1958-05-06
•
Expires: 1975-02-21
Abstract
No abstract record available.
Inventors
- 👤 Porte George C La
- 👤 Edwin W Taylor
- 👤 Charles H Spence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:24
CPC Classifications
B; B61; B61F; B61F15/00; B61F15/20; B61F15/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE69128C
Cited
US1989110A
Cited
US2151410A
Cited
US2165102A
Cited
US2251195A
Cited
US2261124A
Cited
US2241870A
Cited
US2657080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |