US2677181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe marking device
Assignee: ELWOOD E STEPHENS
•
Filing: 1951-07-05
•
Granted: 1954-05-04
•
Expires: 1971-07-05
Abstract
No abstract record available.
Inventors
- 👤 Francis P Sury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:15
CPC Classifications
B; B43; B43L; B43L9/00; B43L9/02; B43L9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE545026C
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US988188A
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US1698154A
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US2164942A
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US2316951A
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US2497853A
Cited
US2460826A
Cited
US2474041A
Cited
US2545666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |