US2968498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust guard
Assignee: Individual
•
Filing: 1957-04-23
•
Granted: 1961-01-17
•
Expires: 1977-04-23
Abstract
No abstract record available.
Inventors
- 👤 Robert G Saunders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:31
CPC Classifications
B; B61; B61F; B61F15/00; B61F15/20; B61F15/22; F; F16; F16C; F16C33/00; F16C33/72; F16C33/74; F16C2326/00; F16C2326/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1889407A
Cited
US2177441A
Cited
US2152937A
Cited
DE851707C
Cited
GB591698A
Cited
US2668067A
Cited
US2693783A
Cited
US2758853A
Cited
US2736585A
Cited
US2789845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |