US2904381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1957-04-05
•
Granted: 1959-09-15
•
Expires: 1977-04-05
Abstract
No abstract record available.
Inventors
- 👤 Earl L Prince
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:42
CPC Classifications
A; A47; A47F; A47F3/00; A47F3/06; A47F3/063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US242657A
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US425323A
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US704404A
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US893983A
Cited
US927625A
Cited
US957461A
Cited
US1375650A
Cited
US1414505A
Cited
US2769551A
Cited
US2758193A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |