Patent US3442175A successfully refreshed from Google Patents.
US3442175A
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Multiple axis milling apparatus
Assignee: McDonnell Douglas Corp
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Filing: 1966-05-03
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Granted: 1969-05-06
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Expires: 1986-05-03
Abstract
No abstract record available.
Inventors
- 👤 Forrest J Heap
- 👤 Richard A Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:58
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/0009; B23Q1/25; B23Q1/44; B23Q1/50; B23Q1/52; B23Q1/525; B23Q1/70; B23Q39/00; B23Q39/04; B23Q5/00; B23Q5/02; B23Q5/04; B23Q5/20; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5104; Y10T29/5105; Y10T408/00; Y10T408/36; Y10T408/38; Y10T408/3822; Y10T408/385; Y10T409/00; Y10T409/30; Y10T409/303976; Y10T409/304032; Y10T409/304312; Y10T409/306664; Y10T409/307784; Y10T409/309352; Y10T409/309408; Y10T409/309464; Y10T483/00; Y10T483/17; Y10T483/1733; Y10T483/179; Y10T483/1793
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2885930A
Cited
DE669127C
Cited
US2379405A
Cited
US2492391A
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US2977827A
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US2835172A
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US3028770A
Cited
US3114294A
Cited
US3288182A
Cited
US3254567A
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US3286595A
Cited
US3262369A
Cited
US3371580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |