US2820535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet metal siding
Assignee: CONS VENETIAN BLIND CO
•
Filing: 1953-09-18
•
Granted: 1958-01-21
•
Expires: 1973-09-18
Abstract
No abstract record available.
Inventors
- 👤 James F Hutchison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:20
CPC Classifications
E; E04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/0864; E04F13/0801; E04F13/0832; E04F13/0833; E04F13/0846; E04F13/0848
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US369477A
Cited
US424149A
Cited
US2099211A
Cited
US2128495A
Cited
US2126676A
Cited
US2250764A
Cited
US2565610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |