US2906429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure plugs
Assignee: American Flange and Manufacturing Co Inc
•
Filing: 1955-07-05
•
Granted: 1959-09-29
•
Expires: 1975-07-05
Abstract
No abstract record available.
Inventors
- 👤 John M Marchyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:53
CPC Classifications
B; B65; B65D; B65D39/00; B65D39/08; B65D39/082; B65D39/084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US362833A
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US2156350A
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US2207565A
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US2343235A
Cited
US2492176A
Cited
US2383231A
Cited
US2445465A
Cited
US2510410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |