Patent US2549083A successfully refreshed from Google Patents.
US2549083A
Expired / Lapsed
US
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Rotary device
Assignee: Individual
•
Filing: 1945-12-14
•
Granted: 1951-04-17
•
Expires: 1965-12-14
Abstract
No abstract record available.
Inventors
- 👤 Israel J Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:16
CPC Classifications
A; A47; A47F; A47F3/00; A47F3/10; A47F3/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1208457A
Cited
US1254983A
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US1479618A
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US1611155A
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US1653394A
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US1656527A
Cited
US1885801A
Cited
US2117882A
Cited
US2116127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |