Patent US1452268A successfully refreshed from Google Patents.
US1452268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling for pipes, conduits, etc
Assignee: Individual
•
Filing: 1921-04-28
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Granted: 1923-04-17
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Expires: 1941-04-28
Abstract
No abstract record available.
Inventors
- 👤 Prederic W Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:15
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/02; F16L19/0206; F16B; F16B2200/00; F16B2200/69; Y; Y10; Y10T; Y10T403/00; Y10T403/45; Y10T403/453; Y10T403/49; Y10T403/4941; Y10T403/4966; Y10T403/51; Y10T403/57; Y10T403/5706
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) | 1926-04-16 | 1926-10-16 | 1927-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-04-16 | 1930-10-16 | 1931-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-04-16 | 1934-10-16 | 1935-04-17 | $7700.00 | Window Closed / Lapsed |