US1877781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hanger
Assignee: Appleton Electric LLC
•
Filing: 1931-02-13
•
Granted: 1932-09-20
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Expires: 1951-02-13
Abstract
No abstract record available.
Inventors
- 👤 Carl O Akerlund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:09
CPC Classifications
F; F16; F16L; F16L3/00; F16L3/24; Y; Y10; Y10S; Y10S24/00; Y10S24/22; Y10T; Y10T24/00; Y10T24/44; Y10T24/44573; Y10T24/4459; Y10T24/44598; Y10T24/44966; Y10T24/44974
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) | 1935-09-20 | 1936-03-21 | 1936-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-09-20 | 1940-03-21 | 1940-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-09-20 | 1944-03-21 | 1944-09-20 | $7700.00 | Window Closed / Lapsed |