US2990855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular conduits
Assignee: Individual
•
Filing: 1958-09-12
•
Granted: 1961-07-04
•
Expires: 1978-09-12
Abstract
No abstract record available.
Inventors
- 👤 Clarence L Sipler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:04
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/10; F02M35/1034; F02M35/10347; F02M35/10314; F02M35/10321; F02M35/10334; F05; F05C; F05C2225/00; F05C2225/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2594838A
Cited
US2614058A
Cited
US2609319A
Cited
US2752952A
Cited
US2703109A
Cited
US2837810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |