Patent US1377840A successfully refreshed from Google Patents.
US1377840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe-stopper
Assignee: Individual
•
Filing: 1915-09-02
•
Granted: 1921-05-10
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Expires: 1935-09-02
Abstract
No abstract record available.
Inventors
- 👤 Frank W Latham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:51
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/12; F16L55/128
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) | 1924-05-09 | 1924-11-08 | 1925-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-05-09 | 1928-11-08 | 1929-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-05-09 | 1932-11-08 | 1933-05-10 | $7700.00 | Window Closed / Lapsed |