Patent US1047700A successfully refreshed from Google Patents.
Patent US2820552A successfully refreshed from Google Patents.
US2820552A
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Assignee: Individual
•
Filing: 1954-06-24
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Granted: 1958-01-21
•
Expires: 1974-06-24
Abstract
No abstract record available.
Inventors
- 👤 Erisalu Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:34
CPC Classifications
A; A47; A47B; A47B57/00; A47B57/30; A47B57/32; A47B57/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE148679C
Cited
US535081A
Cited
US1052516A
Cited
US1372180A
Cited
GB225648A
Cited
US2263837A
Cited
US2577138A
Cited
US2577473A
Cited
US2692109A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |