US3492829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snow horn
Assignee: Airco Inc
•
Filing: 1967-07-28
•
Granted: 1970-02-03
•
Expires: 1987-07-28
Abstract
No abstract record available.
Inventors
- 👤 Wallace B Stanford Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:26
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/50; C01B32/55
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1546682A
Cited
GB304958A
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US2047099A
Cited
FR642057A
Cited
US1927175A
Cited
US2016815A
Cited
US1976204A
Cited
US1969703A
Cited
US2570074A
Cited
GB890062A
Cited
DE1144283B
Cited
US3208935A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |