US2171185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Longitudinal spring for telescopic tubular guides
Assignee: Individual
•
Filing: 1936-12-16
•
Granted: 1939-08-29
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Expires: 1956-12-16
Abstract
No abstract record available.
Inventors
- 👤 Maier Friedrich Eugen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:46
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/20; B21D22/28; B21D22/286; B60; B60G; B60G15/00; B60G15/02; B60G15/06; B60G15/061; F; F16; F16F; F16F1/00; F16F1/02; F16F1/025; F16F1/028; F16F2232/00; F16F2232/02; F16F2236/00; F16F2236/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-08-28 | 1943-02-27 | 1943-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-08-28 | 1947-02-27 | 1947-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-08-28 | 1951-02-27 | 1951-08-29 | $7700.00 | Window Closed / Lapsed |