US2886907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
License holder
Assignee: Individual
•
Filing: 1957-05-17
•
Granted: 1959-05-19
•
Expires: 1977-05-17
Abstract
No abstract record available.
Inventors
- 👤 Helen A Stephenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:07
CPC Classifications
A; A47; A47G; A47G1/00; A47G1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US499936A
Cited
US1790287A
Cited
US781222A
Cited
US811846A
Cited
US1408469A
Cited
US1801546A
Cited
US1972012A
Cited
CH219156A
Cited
US2677910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |