US2485985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drum structure
Assignee: Individual
•
Filing: 1945-07-31
•
Granted: 1949-10-25
•
Expires: 1965-07-31
Abstract
No abstract record available.
Inventors
- 👤 Bernard A Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:14
CPC Classifications
G; G10; G10D; G10D13/00; G10D13/01; G10D13/02; G10D13/10; G10D13/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1553081A
Cited
US1583677A
Cited
US1894968A
Cited
US1899461A
Cited
US2051671A
Cited
US2425996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-24 | 1953-04-25 | 1953-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-24 | 1957-04-25 | 1957-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-24 | 1961-04-25 | 1961-10-25 | $7700.00 | Window Closed / Lapsed |