Patent US3372439A successfully refreshed from Google Patents.
US3372439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe hanger
Assignee: Individual
•
Filing: 1965-10-21
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Granted: 1968-03-12
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Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur Schmid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:39
CPC Classifications
F; F16; F16L; F16L3/00; F16L3/14; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1457; Y10T24/1459; Y10T24/44; Y10T24/44248; Y10T29/00; Y10T29/51; Y10T29/5124; Y10T29/5125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |