US2856252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desk
Assignee: Individual
•
Filing: 1955-07-22
•
Granted: 1958-10-14
•
Expires: 1975-07-22
Abstract
No abstract record available.
Inventors
- 👤 Helen L Herring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:06
CPC Classifications
A; A47; A47B; A47B17/00; A47B17/03; A47B17/036
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US381182A
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US411003A
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US886000A
Cited
US993588A
Cited
US1120050A
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US1218821A
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US1792673A
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US2311861A
Cited
US2345254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |