US2980034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operating mechanism for cover device
Assignee: Individual
•
Filing: 1956-09-27
•
Granted: 1961-04-18
•
Expires: 1976-09-27
Abstract
No abstract record available.
Inventors
- 👤 Harty Ralph Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:03
CPC Classifications
E; E01; E01D; E01D15/00; E01D15/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US912019A
Cited
US1015793A
Cited
US2271697A
Cited
US2381966A
Cited
US2482562A
Cited
US2489869A
Cited
US2652783A
Cited
US2750135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |