US1447949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable lock-joint stovepipe
Assignee: Individual
•
Filing: 1921-02-04
•
Granted: 1923-03-06
•
Expires: 1941-02-04
Abstract
No abstract record available.
Inventors
- 👤 Benjamin B Hall
- 👤 Richard B Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:25
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/24; F16L37/244; F16L37/252; F16L37/248; F23; F23J; F23J13/00; F23J13/04; F23J2213/00; F23J2213/20; F23J2213/202
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1926-03-05 | 1926-09-04 | 1927-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-03-05 | 1930-09-04 | 1931-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-03-05 | 1934-09-04 | 1935-03-06 | $7700.00 | Window Closed / Lapsed |