US3421504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum receptor
Assignee: LAMAR J GIBBONS DE
•
Filing: 1966-01-25
•
Granted: 1969-01-14
•
Expires: 1986-01-25
Abstract
No abstract record available.
Inventors
- 👤 De Lamar J Gibbons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:55
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/64; A61M1/68; A61M1/684
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US822092A
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US2389831A
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US2947470A
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US3032038A
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US3112061A
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US3058627A
Cited
US3161197A
Cited
US3201111A
Cited
US3349768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |