Patent US3473150A successfully refreshed from Google Patents.
US700351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stopper for boiler-tubes or hollow shafting.
Assignee: Individual
•
Filing: 1901-08-14
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Granted: 1902-05-20
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Expires: 1921-08-14
Abstract
No abstract record available.
Inventors
- 👤 Henry T Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:21
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/12; F16L55/128; F16L55/132
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1905-05-19 | 1905-11-18 | 1906-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1909-05-19 | 1909-11-18 | 1910-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1913-05-19 | 1913-11-18 | 1914-05-20 | $7700.00 | Window Closed / Lapsed |