Patent US3241213A successfully refreshed from Google Patents.
US3241213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick-opening stuffing box
Assignee: Monsanto Co
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Filing: 1964-01-13
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Granted: 1966-03-22
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Expires: 1984-01-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Byrd T Thompson
- 👤 Clifford C Letson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:10
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A QUICK-OPENING STUFFING BOX COMPRISING A FIRST DOCTOR BLADE AND A SECOND DOCTOR BLADE, SAID FIRST DOCTOR BLADE BEING STATIONARY, AND SAID SECOND DOCTOR BLADE BEING REMOVABLY ATTACHED TO SAID FIRST DOCTOR BLADE BY A PAIR OF SWINGABLY MOUNTED BOLTS, MEANS FOR SPACING SAID BLADES APART, AND MEANS ASSOCIATED WITH SAID FIRST BLADE FOR LIMITING MOVEMENT IN ONE DIRECTION OF SAID SECOND BLADE WHEREBY SAID SECOND BLADE IS QUICKLY MOUNTED IN A PREDETERMINED POSITION.
Claim 2
Dependent Claim
74 words
A QUICK-OPENING STUFFING BOX COMPRISING A FIRST DOCTOR BLADE AND A SECOND DOCTOR BLADE, SAID FIRST DOCTOR BLADE BEING STATIONARY, AND SAID SECOND DOCTOR BLADE BEING REMOVABLY ATTACHED TO SAID FIRST DOCTOR BLADE BY A PAIR OF SWINGABLY MOUNTED BOLTS, MEANS FOR SPACING SAID BLADES APART, AND MEANS ASSOCIATED WITH SAID FIRST BLADE FOR LIMITING MOVEMENT IN ONE DIRECTION OF SAID SECOND BLADE WHEREBY SAID SECOND BLADE IS QUICKLY MOUNTED IN A PREDETERMINED POSITION.
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |