Patent US3362478A successfully refreshed from Google Patents.
US3362478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bridge plugs
Assignee: OLIVER B MCREYNOLDS JR
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Filing: 1966-04-11
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Granted: 1968-01-09
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Expires: 1986-04-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Oliver B Mcreynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:17
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/136
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A BRIDGE PLUG FOR THE BORE HOLE OF A WELL, WHICH BRIDGE PLUG COMPRISES; (A) SUPERPOSED FLEXIBLE DISCS WHICH ARE CAPABLE OF BEING DEFORMED, (1) EACH FLEXIBLE DISC BEING SLITTED FROM THE PERIPHERY A SPACED DISTANCE TOWARD THE CENTER, (2) SAID SUPERPOSED DISCS BEING SO ARRANGED THAT THE SLITS OF SAID DISCS ALTERNATE SO AS TO PRESENT A SUBSTANTIALLY IMPERFORATE DISC-LIKE MEMBER WHEN IN UNDEFORMED CONDITION,
Claim 2
Dependent Claim
66 words
A BRIDGE PLUG FOR THE BORE HOLE OF A WELL, WHICH BRIDGE PLUG COMPRISES; (A) SUPERPOSED FLEXIBLE DISCS WHICH ARE CAPABLE OF BEING DEFORMED, (1) EACH FLEXIBLE DISC BEING SLITTED FROM THE PERIPHERY A SPACED DISTANCE TOWARD THE CENTER, (2) SAID SUPERPOSED DISCS BEING SO ARRANGED THAT THE SLITS OF SAID DISCS ALTERNATE SO AS TO PRESENT A SUBSTANTIALLY IMPERFORATE DISC-LIKE MEMBER WHEN IN UNDEFORMED CONDITION,
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |