US2801450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing device
Assignee: Individual
•
Filing: 1953-05-25
•
Granted: 1957-08-06
•
Expires: 1973-05-25
Abstract
No abstract record available.
Inventors
- 👤 Funke Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:05
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/16; E06B7/22; E06B7/23; E06B7/2305; E06B7/2307; E06B7/231
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US818764A
Cited
US1337394A
Cited
US1383191A
Cited
US1735048A
Cited
US1965014A
Cited
US2040133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |