US2743729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1953-10-19
•
Granted: 1956-05-01
•
Expires: 1973-10-19
Abstract
No abstract record available.
Inventors
- 👤 Butler Beatrice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:35
CPC Classifications
A; A24; A24F; A24F19/00; A24F19/10; A24F19/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US276336A
Cited
AT9348B
Cited
US846662A
Cited
US1147102A
Cited
GB179477A
Cited
GB468541A
Cited
US2156738A
Cited
US2280543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |