US2983054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drum rater
Assignee: Individual
•
Filing: 1958-02-27
•
Granted: 1961-05-09
•
Expires: 1978-02-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Loran C Twyford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:45
CPC Classifications
G; G09; G09B; G09B3/00; G09B3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1321292A
Cited
US1670480A
Cited
US698114A
Cited
FR396521A
Cited
US1704022A
Cited
US1749226A
Cited
US1813442A
Cited
US2317107A
Cited
FR1102963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |