US2964807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1957-07-05
•
Granted: 1960-12-20
•
Expires: 1977-07-05
Abstract
No abstract record available.
Inventors
- 👤 Robert E Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:49
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04G; E04G21/00; E04G21/14; E04G21/16; E04G21/18; E04G21/1891; E04B; E04B2/00; E04B2/74; E04B2002/7483; E04B2002/7485; E04C2003/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1867449A
Cited
US968586A
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US1268058A
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US1157426A
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US1742045A
Cited
US1782034A
Cited
US2302194A
Cited
US2374623A
Cited
US2442726A
Cited
US2580334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |