Patent US1328511A successfully refreshed from Google Patents.
US1328511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspended arch for boilers and the like
Assignee: Individual
•
Filing: 1919-05-12
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Granted: 1920-01-20
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Expires: 1939-05-12
Abstract
No abstract record available.
Inventors
- 👤 Walter E Gehring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:22
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/02; F27D1/021; F23; F23M; F23M5/00; F23M5/04
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) | 1923-01-19 | 1923-07-21 | 1924-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-01-19 | 1927-07-21 | 1928-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-01-19 | 1931-07-21 | 1932-01-20 | $7700.00 | Window Closed / Lapsed |