US2958550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bellows-type expansion compensator with anti-torque guide
Assignee: Individual
•
Filing: 1958-04-17
•
Granted: 1960-11-01
•
Expires: 1978-04-17
Abstract
No abstract record available.
Inventors
- 👤 Frank A Mcdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:53
CPC Classifications
F; F16; F16L; F16L51/00; F16L51/02; F16L51/025; F16L51/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1314601A
Cited
US1499050A
Cited
US2116290A
Cited
US2348833A
Cited
US2479104A
Cited
US2527933A
Cited
US2769196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |