US3530566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making bellows assembly
Assignee: MCMURRY OIL TOOL SPECIALTIES Inc
•
Filing: 1968-01-08
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Granted: 1970-09-29
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Expires: 1988-01-08
Abstract
No abstract record available.
Inventors
- 👤 Everett D Mcmurry
- 👤 Knud I Bruun
- 👤 Bolling A Abercrombie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:12
CPC Classifications
F; F16; F16J; F16J3/00; F16J3/04; F16J3/048; E; E21; E21B; E21B43/00; E21B43/12; E21B43/121; E21B43/122; E21B43/123; F04; F04F; F04F1/00; F04F1/18; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49865; Y10T29/49877
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1382081A
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US1998356A
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US2027962A
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US2490513A
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US2877070A
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US2920656A
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FR74627E
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US3313017A
Cited
US3417177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |