Patent US2930456A successfully refreshed from Google Patents.
Patent US2425611A successfully refreshed from Google Patents.
US2425611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic door knor
Assignee: Individual
•
Filing: 1944-11-17
•
Granted: 1947-08-12
•
Expires: 1964-11-17
Abstract
No abstract record available.
Inventors
- 👤 Frank E Frost
- 👤 Edward A Pavlis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:39
CPC Classifications
E; E05; E05B; E05B1/00; E05B1/0007; Y; Y10; Y10T; Y10T292/00; Y10T292/82; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24339; Y10T428/24347
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US672866A
Cited
US839258A
Cited
US1767421A
Cited
US1568883A
Cited
US1746059A
Cited
US1687531A
Cited
US1919455A
Cited
US1829371A
Cited
US1986374A
Cited
US1996357A
Cited
US2199018A
Cited
US2125783A
Cited
US2273190A
Cited
US2304036A
Cited
US2356585A
Cited
US2293630A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-11 | 1951-02-10 | 1951-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-11 | 1955-02-10 | 1955-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-11 | 1959-02-10 | 1959-08-12 | $7700.00 | Window Closed / Lapsed |