Patent US2554503A successfully refreshed from Google Patents.
US2554503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube sealing apparatus
Assignee: Individual
•
Filing: 1945-07-13
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Granted: 1951-05-29
•
Expires: 1965-07-13
Abstract
No abstract record available.
Inventors
- 👤 Jr William T Rainey
- 👤 John A Krynitsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:28
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/04; C03B23/09; C03B23/099
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR529324A
Cited
US1455056A
Cited
US1489837A
Cited
US1674636A
Cited
US1844869A
Cited
US1949119A
Cited
US1976239A
Cited
US2077827A
Cited
US2234302A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |