Patent US2446281A successfully refreshed from Google Patents.
US2446281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrugated tube manufacture
Assignee: Uniroyal Inc
•
Filing: 1944-05-11
•
Granted: 1948-08-03
•
Expires: 1964-05-11
Abstract
No abstract record available.
Inventors
- 👤 Watson G Harding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:52
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; B; B29; B29C; B29C53/00; B29C53/22; B29C53/30; B29C61/00; B29C61/02; B29C61/025; B29C61/06; B29C61/0608; B29C61/0658; B29D; B29D23/00; B29D23/18; B29K; B29K2021/00; B29K2233/00; B29K2233/18; B29K2233/20; B29L; B29L2023/00; B29L2023/18; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1021; Y10T279/1024; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49877; Y10T29/53; Y10T29/53657; Y10T29/53991
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-03 | 1952-02-02 | 1952-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-03 | 1956-02-02 | 1956-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-03 | 1960-02-02 | 1960-08-03 | $7700.00 | Window Closed / Lapsed |