US1255417A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Threadless-pipe system for conductors and for conveying the voice.
Assignee: Individual
•
Filing: 1916-04-26
•
Granted: 1918-02-05
•
Expires: 1936-04-26
Abstract
No abstract record available.
Inventors
- 👤 Ernest W Hedges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:12
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/06; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1412; Y10T24/1441
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) | 1921-02-04 | 1921-08-06 | 1922-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-02-04 | 1925-08-06 | 1926-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-02-04 | 1929-08-06 | 1930-02-05 | $7700.00 | Window Closed / Lapsed |