US2848804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for closing tubes by spinning
Assignee: Individual
•
Filing: 1945-10-18
•
Granted: 1958-08-26
•
Expires: 1965-10-18
Abstract
No abstract record available.
Inventors
- 👤 Edwin E Graves
- 👤 Robert H Coonfare
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:34
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/02; G21C3/04; G21C3/06; G21C3/10; B; B21; B21D; B21D41/00; B21D41/04; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10T; Y10T407/00; Y10T407/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US389761A
Cited
US501547A
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US675184A
Cited
US1267782A
Cited
US1361851A
Cited
US2173759A
Cited
US2284210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |