US2517979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anchor insert for all purposes
Assignee: Individual
•
Filing: 1946-03-25
•
Granted: 1950-08-08
•
Expires: 1966-03-25
Abstract
No abstract record available.
Inventors
- 👤 Leonard T Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:18
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/38; E04B1/41; E04B1/4114; E04B1/4142
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1627554A
Cited
US1606872A
Cited
US1929835A
Cited
US1933536A
Cited
US2133134A
Cited
US2163446A
Cited
US2199533A
Cited
US2277449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-07 | 1954-02-06 | 1954-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-07 | 1958-02-06 | 1958-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-07 | 1962-02-06 | 1962-08-08 | $7700.00 | Window Closed / Lapsed |