US2697971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
evans
Assignee: —
•
Filing: —
•
Granted: 1954-12-28
•
Expires: 1971-12-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:40
CPC Classifications
F; F16; F16M; F16M11/00; F16M11/02; F16M11/04; A; A45; A45C; A45C11/00; A45C11/38; F16M11/18; G; G03; G03B; G03B17/00; G03B17/56; G03B17/561
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1194657A
Cited
US753800A
Cited
US782649A
Cited
US922138A
Cited
US1029296A
Cited
US1627722A
Cited
US1297704A
Cited
US1551698A
Cited
US1996481A
Cited
CH253967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |