US708491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust-guard.
Assignee: METAL DUST GUARD Co OF BALTIMORE CITY
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Filing: 1901-06-03
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Granted: 1902-09-02
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Expires: 1921-06-03
Abstract
No abstract record available.
Inventors
- 👤 James S Patten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:12
CPC Classifications
B; B61; B61F; B61F15/00; B61F15/20; B61F15/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1905-09-01 | 1906-03-03 | 1906-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1909-09-01 | 1910-03-03 | 1910-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1913-09-01 | 1914-03-03 | 1914-09-02 | $7700.00 | Window Closed / Lapsed |