US2859522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe marker
Assignee: Individual
•
Filing: 1955-04-13
•
Granted: 1958-11-11
•
Expires: 1975-04-13
Abstract
No abstract record available.
Inventors
- 👤 Charles M Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:33
CPC Classifications
B; B25; B25H; B25H7/00; B25H7/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1660616A
Cited
US1907956A
Cited
US1991117A
Cited
US2494698A
Cited
US2638285A
Cited
US2677181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |