US2649671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and machine for packaging material in an inert gaseous atmosphere
Assignee: DONALD E BARTELT
•
Filing: 1949-12-10
•
Granted: 1953-08-25
•
Expires: 1969-12-10
Abstract
No abstract record available.
Inventors
- 👤 Harold L Bartelt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:04
CPC Classifications
B; B65; B65B; B65B1/00; B65B1/30; B65B1/36; B65B1/363; B65B31/00; B65B31/02; B65B31/024; B65B9/00; B65B9/06; B65B9/08; B65B9/093
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2182187A
Cited
US2133367A
Cited
US2147632A
Cited
US2145941A
Cited
US2241943A
Cited
US2277288A
Cited
US2292295A
Cited
US2387812A
Cited
US2482609A
Cited
US2528680A
Cited
US2546721A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |