US2713982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring hanger
Assignee: PIPING SPECIALTIES Inc
•
Filing: 1951-06-22
•
Granted: 1955-07-26
•
Expires: 1971-06-22
Abstract
No abstract record available.
Inventors
- 👤 Walter A Sherbrooke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:41
CPC Classifications
F; F16; F16L; F16L3/00; F16L3/16; F16L3/20; F16L3/205; F16L3/2053
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US617500A
Cited
US1004137A
Cited
US1221705A
Cited
US1370862A
Cited
US1730618A
Cited
US1867233A
Cited
US1915727A
Cited
US2159870A
Cited
US2397094A
Cited
US2570538A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-25 | 1959-01-24 | 1959-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-25 | 1963-01-24 | 1963-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-25 | 1967-01-24 | 1967-07-26 | $7700.00 | Window Closed / Lapsed |