Patent US2923509A successfully refreshed from Google Patents.
US2923509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe hanger
Assignee: Individual
•
Filing: 1956-02-13
•
Granted: 1960-02-02
•
Expires: 1976-02-13
Abstract
No abstract record available.
Inventors
- 👤 Samuel S Kolodin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:03
CPC Classifications
F; F16; F16L; F16L3/00; F16L3/08; F16L3/10; F16L3/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US437018A
Cited
US801409A
Cited
US1450640A
Cited
US1698571A
Cited
US1904315A
Cited
GB415892A
Cited
US2444427A
Cited
US2466247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |