Patent US2280822A successfully refreshed from Google Patents.
Patent US2554328A successfully refreshed from Google Patents.
US2554328A
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US
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Sealing tube and method of sealing
Assignee: Individual
•
Filing: 1947-06-16
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Granted: 1951-05-22
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Expires: 1967-06-16
Abstract
No abstract record available.
Inventors
- 👤 William F Grimes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:08
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/40; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/931; Y10S428/9335; Y10S428/939; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49877; Y10T29/49908; Y10T29/49915; Y10T29/49917; Y10T29/49925; Y10T29/49927; Y10T29/49929; Y10T428/00; Y10T428/12; Y10T428/12389; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1266831A
Cited
US1568080A
Cited
DE404923C
Cited
US1679701A
Cited
US1750643A
Cited
GB490586A
Cited
US2216833A
Cited
US2301899A
Cited
US2386747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |