Patent US3250443A successfully refreshed from Google Patents.
US3250443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispensing cartridge plunger
Assignee: General Electric Co
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Filing: 1964-12-21
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Granted: 1966-05-10
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Expires: 1984-12-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Joe L Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:00
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/005; B05C17/00576; F; F16; F16N; F16N3/00; F16N3/10; F16N3/12; B05C17/01; B05C17/014
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
AN IMPERFORATE CARTRIDGE PLUNGER OF THE TYEP DESCRIBED COMPRISING IN THE UNDERFORMED STATE AN ELONGATED, REARWARDLY EXTENDNG LATERAL PORTION ADAPTED TO CONTACT THE INNER WALL OF A CYLINDRICAL DISPENSING CARTRIDGE, A DOME-SHAPED CENTRAL HAVING AN ANNULAR RIB INTEGRAL THEREWITH, AND A BELLOWS CONNECTING SAID LATERAL
Claim 2
Dependent Claim
45 words
AN IMPERFORATE CARTRIDGE PLUNGER OF THE TYEP DESCRIBED COMPRISING IN THE UNDERFORMED STATE AN ELONGATED, REARWARDLY EXTENDNG LATERAL PORTION ADAPTED TO CONTACT THE INNER WALL OF A CYLINDRICAL DISPENSING CARTRIDGE, A DOME-SHAPED CENTRAL HAVING AN ANNULAR RIB INTEGRAL THEREWITH, AND A BELLOWS CONNECTING SAID LATERAL
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |