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Patent US2713220A successfully refreshed from Google Patents.
US2713220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
muenchow
Assignee: —
•
Filing: —
•
Granted: 1955-07-19
•
Expires: 1972-07-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:22
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7663; E02F3/7668
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE16200E
Cited
US1875534A
Cited
US880061A
Cited
US1708042A
Cited
US1957771A
Cited
US1981284A
Cited
US2284463A
Cited
US2552770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-18 | 1959-01-17 | 1959-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-18 | 1963-01-17 | 1963-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-18 | 1967-01-17 | 1967-07-19 | $7700.00 | Window Closed / Lapsed |