Patent US3447274A successfully refreshed from Google Patents.
US3447274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scenery system
Assignee: Individual
•
Filing: 1967-06-14
•
Granted: 1969-06-03
•
Expires: 1987-06-14
Abstract
No abstract record available.
Inventors
- 👤 Louis Davidson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:17
CPC Classifications
A; A47; A47H; A47H23/00; A47H23/02; A47H23/04; Y; Y10; Y10T; Y10T428/00; Y10T428/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US260559A
Cited
US353780A
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US1767081A
Cited
US1802102A
Cited
US2161130A
Cited
US2388297A
Cited
FR878247A
Cited
US2542581A
Cited
FR933554A
Cited
US2515664A
Cited
US2565553A
Cited
US2682727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |