Patent US3037953A successfully refreshed from Google Patents.
US2797730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making an extensible flexible hose
Assignee: Hoover Co
•
Filing: 1955-12-06
•
Granted: 1957-07-02
•
Expires: 1975-12-06
Abstract
No abstract record available.
Inventors
- 👤 Frank A Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:29
CPC Classifications
B; B29; B29C; B29C63/00; B29C63/18; B29C63/20; B29D; B29D23/00; B29D23/18; B29K; B29K2021/00; Y; Y10; Y10S; Y10S264/00; Y10S264/52; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49838; Y10T29/49863; Y10T29/4987; Y10T29/53; Y10T29/53657; Y10T29/53696
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) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |