US3053332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic fill-control system
Assignee: Pfizer Inc
•
Filing: 1958-05-01
•
Granted: 1962-09-11
•
Expires: 1978-05-01
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Buchtenkirch
- 👤 Lipkin Walter
- 👤 Malcolm D Widenor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:03
CPC Classifications
B; B65; B65B; B65B1/00; B65B1/30; B65B1/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |