US2449387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-bag cleaning and buffing machine
Assignee: NAT SHERARDIZING AND MACHINE C
•
Filing: 1946-03-12
•
Granted: 1948-09-14
•
Expires: 1966-03-12
Abstract
No abstract record available.
Inventors
- 👤 Johnson John Eric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:17
CPC Classifications
B; B24; B24B; B24B5/00; B24B5/36; B24B5/366; B24B21/00; B24B21/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1186616A
Cited
US1262540A
Cited
US1735903A
Cited
US1881162A
Cited
US2057290A
Cited
US2288691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-14 | 1952-03-15 | 1952-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-14 | 1956-03-15 | 1956-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-14 | 1960-03-15 | 1960-09-14 | $7700.00 | Window Closed / Lapsed |