US3346923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential pressure forming machine
Assignee: Brown Machine Company of Michigan Inc
•
Filing: 1963-07-10
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Granted: 1967-10-17
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Expires: 1983-07-10
Abstract
No abstract record available.
Inventors
- 👤 Gaylord W Brown
- 👤 Donald J Rise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:26
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/10; B23; B23K; B23K15/00; B23K15/08; B23K26/00; B23K26/20; B23K26/36; B23K26/38; B23K26/382; B23K26/40; B29C51/04; B29C51/18; B29C51/26; B29C51/30; B29C51/38; G; G06; G06K; G06K1/00; G06K1/12; G06K1/126; H; H05; H05K; H05K3/00; H05K3/02; H05K3/027; B23K2103/00; B23K2103/30; B23K2103/40; B23K2103/50; Y; Y10; Y10S; Y10S425/00; Y10S425/048
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
IN A DIFFERENTIAL PRESSURE FORMING MACHINE FOR MOLDING ARTICLES IN THERMOPLASTIC MATERIAL: FRAME MEANS; A PAIR OF OPPOSITELY DISPOSED MOLD FRAMES MOUNTED THEREON; ONE OF SAID FRAMES INCLUDING CAVITY MEANS AND THE OTHER COMPRISING AN AIR BOX FRAME; MEANS CONNECTED WITH AT LEAST ONE OF SAID FRAMES FOR MOVING IT TOWARD THE OTHER FRAME; MEANS FOR SUPPORTING A WEB OF PLASTIC BETWEEN SAID FRAMES; MEANS FOR APPLYING A VACUUM TO SAID CAVITY MEANS; LINE MEANS FOR INTRODUCING FLUID UNDER PRESSURE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |