US3146951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making artificial snow
Assignee: Individual
•
Filing: 1963-05-23
•
Granted: 1964-09-01
•
Expires: 1983-05-23
Abstract
No abstract record available.
Inventors
- 👤 Richard H Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:24
CPC Classifications
F; F25; F25C; F25C3/00; F25C3/04; F25C2303/00; F25C2303/048; F25C2303/0481
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US953136A
Cited
US1059611A
Cited
US2571069A
Cited
US2676471A
Cited
FR1106820A
Cited
US2968164A
Cited
US3010660A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |